But yes, if all those other things are decent enough, Tesla obviously has the money to acquire this startup.
Not according to the article:
"In practice, that means lithium iron-phosphate (LFP) chemistry, which historically has energy density 30 percent lower than cobalt- or nickel-based chemistries (and, unfortunately, reportedly cold-weather issues). Its first product, Aries, will go into production late this year. It's a battery using prismatic LFP cells in a structural cell-to-pack architecture without separate modules, packing more cells into the pack to lower the energy disadvantage against cobalt cells."
> "The cathode will be made of a proprietary material rich in manganese that ONE says can be sustainably sourced at low cost. (The company has so far applied for 14 patents related to the Gemini pack.) The LFP cells cover 99 percent of the vehicle’s duty cycle, Ijaz told C/D, and the range extender is used for just 1 percent.
> As a proof of concept, however, the prototype pack used in the demonstration was powered by different cells. The capacity of more than 200 kilowatt-hours was provided by high-energy cobalt-nickel cells, while those intended for the Gemini line are still under development."
So this was just an energy density demonstration. It does sound like they plan to use LFP cells, not cobalt-nickel, for the production batteries.
> "The company dubs its prototype a proof of concept. The point is to show that real-world ranges far longer than an average driver's endurance (pit stops, ahem) can be achieved in the near future. The next step is for it to evolve into a new battery called Gemini, intended to go into production after 2023."
They don't say whether it is LFP based though.
Which would amusingly put your 600 mile guess just about dead on.
With a convential vehicle, it's not so simple. A lot of things get worse, but engine efficiency is usually better with higher temperatures (which is why the VW TDI NOx emissions fix results in more CO2 emissions; NOx is a result of nitrogen in outside air being exposed to the hot engine, lowering the temperature reduces fuel efficiency and NOx production), and the gearing is designed to get maxium fuel efficiency at higher speeds. Of course, if it would be commercially acceptable, an engine and gearing could be designed to get max efficiency at a lower speed and have a 40 mph super efficient vehicle. Hybrids can do a lot better at running the engine near peak efficiency or having the engine off, allowing for higher mpg all over the speed spectrum.