[Martinjlm]

Originally Posted by FarmerFran

Wasn't there already a company working on this some years ago in CA swapping batteries out of Nissan Leaf?

There were a few companies looking at this. Probably the best known is Better Place, out of Israel. They were working with either Renault or PSA, I forget which, to do this. They are now bankrupt. Tesla also worked on this for a hot minute. When the federal government dropped funding of research and the application of credits for this, Tesla dropped the concept.

From what I’ve studied in this area, having an efficient battery swapping approach would require multiple automakers agreeing on a certain level of common connect points as well as battery size and location. Ain’t happening. Each automaker has way to many engineering and design element inputs that they have to manage to be handcuffed by “battery must connect in this location in that manner to facilitate swapping”. But, in NASCAR, where all the cars are fairly close in design in terms of chassis and suspension, you can do this and it’s probably the best approach.