One way to get that is to do an EV conversion. Unfortunately, it tends to be expensive and time consuming, but in the end you get something that's just a car a

One way to get that is to do an EV conversion. Unfortunately, it tends to be expensive and time consuming, but in the end you get something that's just a car and not somebody's notion of an ideal consumer electronics experience. That's not to say there'll be no software, or even that it won't be proprietary. But at least it's a lot nicer to buy a motor controller, a charger, a battery management system and whatever else you need from companies that know the parts have to be easy to configure and interoperate with other components from other companies, because if they aren't people won't buy them. Modularity is a wonderful thing. (I just ordered the charger and BMS for a project I'm working on yesterday. I ended up opting for more expensive components because they're configurable by the end user, whereas the popular cheap option you have to send it to someone to reprogram if you change your battery pack configuration.)