Not really. You might want to look at what Rivian has been sharing about their vehicle hardware and software architecture. Sandy Munro did a few on site visits with their team.
I think you are underestimating how complex EVs are, how much software goes into them, and what goes into coming up with an alternative software stack. Also, I doubt that the likes of Rivian, Tesla, etc. are going to just let people boot whatever on their cars. Why would they?
But at the lower levels, hacking things like battery management systems is definitely a thing that is done and somewhat supported. A lot of retrofits where ICE engines are swapped out for an electrical drive train end up repurposing drive trains from EVs.
I think you are underestimating how complex EVs are, how much software goes into them, and what goes into coming up with an alternative software stack. Also, I doubt that the likes of Rivian, Tesla, etc. are going to just let people boot whatever on their cars. Why would they?
But at the lower levels, hacking things like battery management systems is definitely a thing that is done and somewhat supported. A lot of retrofits where ICE engines are swapped out for an electrical drive train end up repurposing drive trains from EVs.