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How does Tesla ‘Ludicrous Speed’ work?
Following the announcement that Tesla will be releasing a ‘Ludicrous Speed’ upgrade for the dual-motor Model S P85D and upcoming Model X, the natural question emerged: How does Tesla Ludicrous Speed work?
How was Tesla able to extract more acceleration from the already ‘Insane'(ly) quick Model S P85D, and from the same battery back?
Model S P85D at Tesla’s Los Angeles Service Center
It’s important to first understand that the Model S uses an inverter to convert the transfer of electrons from Tesla’s direct current (DC) battery back to alternating current (AC) of the electric motor. Quoting an analogy provided by ExplainThatStuff, we learn that the electrons work like a line of ants, marching along with packets of electrical energy in the same way that ants carry leaves. The more ants we have, theoretically, the more packets of electrical energy we’ll have.
Citing our friends at TeslaTap, current flowing from the battery passes through a contactor which is a large switch controlled by an electromagnet under software control. The contactor connects the battery pack from connections outside the pack such as to the motor inverter, chargers, etc.
The algorithms within Tesla’s Firmware helps maintain constant torque by controlling the amount of current flowing through the contactors and to the electric motors. Ludicrous Speed adds a safety fuse and a new type of contactor that can safely sustain a current draw of 1,300 amps to 1,500 amps thereby allowing the electric motors to temporarily produce more power, and for a longer duration of time. End result? Mind-shattering acceleration to the tune of 0-60 mph in 2.8 seconds.
>>> RELATED: Specifications for Tesla Model S and Model X Ludicrous Speed
Tesla Motors Blog
While working on our goal of making the power train last a million miles, we came up with the idea for an advanced smart fuse for the battery. Instead of a standard fuse that just melts past a certain amperage, requiring a big gap between the normal operating current and max current, we developed a fuse with its own electronics and a tiny lithium-ion battery. It constantly monitors current at the millisecond level and is pyro-actuated to cut power with extreme precision and certainty.
That was combined with upgrading the main pack contactor to use inconel (a high temperature space-grade superalloy) instead of steel, so that it remains springy under the heat of heavy current. The net result is that we can safely increase the max pack output from 1300 to 1500 Amps.
Tesla stock (NASDAQ: TSLA) has landed an elusive “must own” status from Wall Street firm Melius, according to a new note released early this week.
Analyst Rob Wertheimer said Tesla will lead the charge in world-changing tech, given the company’s focus on self-driving, autonomy, and Robotaxi. In a note to investors, Wertheimer said “the world is about to change, dramatically,” because of the advent of self-driving cars.
He looks at the industry and sees many potential players, but the firm says there will only be one true winner:
“Our point is not that Tesla is at risk, it’s that everybody else is.”
The major argument is that autonomy is nearing a tipping point where years of chipping away at the software and data needed to develop a sound, safe, and effective form of autonomous driving technology turn into an avalanche of progress.
Wertheimer believes autonomy is a $7 trillion sector,” and in the coming years, investors will see “hundreds of billions in value shift to Tesla.”
A lot of the major growth has to do with the all-too-common “butts in seats” strategy, as Wertheimer believes that only a fraction of people in the United States have ridden in a self-driving car. In Tesla’s regard, only “tens of thousands” have tried Tesla’s latest Full Self-Driving (Supervised) version, which is v14.
Tesla Full Self-Driving v14.2 – Full Review, the Good and the Bad
When it reaches a widespread rollout and more people are able to experience Tesla Full Self-Driving v14, he believes “it will shock most people.”
Citing things like Tesla’s massive data pool from its vehicles, as well as its shift to end-to-end neural nets in 2021 and 2022, as well as the upcoming AI5 chip, which will be put into a handful of vehicles next year, but will reach a wider rollout in 2027, Melius believes many investors are not aware of the pace of advancement in self-driving.
Tesla’s lead in its self-driving efforts is expanding, Wertheimer says. The company is making strategic choices on everything from hardware to software, manufacturing, and overall vehicle design. He says Tesla has left legacy automakers struggling to keep pace as they still rely on outdated architectures and fragmented supplier systems.
Tesla shares are up over 6 percent at 10:40 a.m. on the East Coast, trading at around $416.
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Tesla on track to break Volkswagen’s historic record in Norway: report
As per Elbil Statistik, Tesla reached 26,127 Norwegian sales so far this year, without counting 13 imported Cybertrucks.
Tesla is surging towards a historic milestone in Norway this month, putting the company on track to break Volkswagen’s long-standing annual sales record in the country.
With 3,732 units sold in November alone and more than 26,000 delivered year-to-date, Tesla is poised to become one of the most successful car brands in Norway’s modern automotive history.
Tesla closes in on Norway’s all-time sales record
Norway’s demand for Tesla vehicles has intensified as drivers attempt to beat the incoming VAT changes on electric cars. Once the VAT changes take effect, the best-selling Model Y could become 50,000 kroner more expensive, as noted in a CarUp report. This has likely caused a rise in sales for Tesla in the country as of late.
As per Elbil Statistik, Tesla reached 26,127 Norwegian sales so far this year, without counting 13 imported Cybertrucks. This places the brand just hundreds of units away from surpassing Volkswagen’s 2016 record of 26,572 annual registrations. With one month left in 2025, it seems all but certain that Tesla will overtake Volkswagen’s all-time record in Norway.
Tesla sees challenges in Sweden
While Norway is delivering historic results, Tesla’s Swedish performance has moved in the opposite direction. Registrations have dropped 68% this year, totaling just 6,147 vehicles so far. November has seen only 291 deliveries, highlighting challenges in the domestic market’s momentum.
Tesla Sweden is also still dealing with an increasing number of union-backed protests and blockades. Despite the pressure, however, Tesla Sweden has maintained its stance, IF Metall union chair Marie Nilsson to urge Elon Musk to reconsider his perception of organized labor. She also stated that Swedish unions are not like their American counterparts, as they are not as combative.
Tesla Full Self-Driving has officially landed in a new country today, its seventh overall after it launched in both Australia and New Zealand earlier this year.
On Sunday, Tesla owners in South Korea reported that the company’s Full Self-Driving (Supervised) had started arriving in their vehicles. Owners reported that it was v14.1.4, which is not the latest version available in other countries, but is one of the most recent releases Tesla has deployed to drivers:
From 6 to 7
Tesla Full Self-Driving has launched in South Korea; the 7th country to have FSD https://t.co/X6gm1SyoxV
— TESLARATI (@Teslarati) November 23, 2025
This marks the seventh country in which Tesla has enabled its Full Self-Driving suite, following the United States and Puerto Rico, Canada, China, Mexico, Australia, and New Zealand.
Tesla launched Full Self-Driving most recently in Australia and New Zealand about three months ago. The expansion is a major breakthrough for the company as it aims to launch Full Self-Driving on a global scale.
However, the company’s biggest challenge thus far has been getting European regulatory agencies to handle the red tape that has inhibited Tesla from launching its semi-autonomous driving suite on the continent. Recently, it admitted that it sees a pathway through Dutch regulatory bodies, which seem to be the most willing to work with Tesla to get FSD in Europe.
Tesla Full Self-Driving appears to be heading to Europe soon
The company said that it has driven over 1 million kilometers safely on European roads across 17 different countries in internal testing. But its path to success will be by “partnering with the Dutch approval authority RDW to gain exemption for the feature. This involves proving compliance with existing regulations (UN-R-171 DCAS) + filing an exemption (EU Article 39) for yet-to-be-regulated behaviors like Level 2 systems off-highway, system-initiated lane changes with hands-off the wheel, etc.”
Perhaps the expansion into Europe will be the biggest challenge for Tesla, but it could also yield major results and advantages for the company moving forward. Tesla said it hopes to have FSD available in Europe sometime early next year.
For now, the expansion in South Korea is the latest win for Tesla and its self-driving efforts. In the U.S., it now turns its focus toward fully autonomous operation, as it works with state agencies to launch Robotaxi outside of Texas, California, and most recently, Arizona.
Tesla stock lands elusive ‘must own’ status from Wall Street firm
Tesla on track to break Volkswagen’s historic record in Norway: report
