[elihu]

That's one of the reasons I'm working on an EV conversion right now; I can choose whatever motor/controller/charger/battery/battery management system I like as long as they're basically compatible, and each part just does what it needs to do. There's nothing that phones home, and no reason to have anything like that.

I'd prefer fully open-source hardware/software, and there are projects in that direction, but I'm also okay with using proprietary black boxes that each do their job and can be configured by the end user and can be replaced by an equivalent component from any of a variety of vendors.

Doing a conversion is obviously a lot of work and not for everyone. I wish there was an easier way to get an easily customizable car. There is at least a fair bit of knowledge now about how Tesla and Leaf components work, to the point that people are swapping Leaf motors and Tesla drive units and used battery modules into conversion cars and getting it to work.