I'm sorry but I think the Carbrain might be terminal. We DO NOT need numerous models of car. That's the opposite of what we want. There's a reason that national auto programs focus on one model of small car that meets the needs of all. VW Beetle, Trabant 500, ZAZ Zaporozhets, Fiat 500, Citroën 2CV, Tata Nano, BMC Mini, Proton Saga, etc. Compare this to the fucking chaos of something like the Indonesian LCGC or Thai Eco Car programs.
Safety features do not train worse drivers, that's cope from insecure men who want to feel like they're a good driver because they're not "dependent" on safety features. It's a half-step removed from "no seatbelts, we die like men" type toxic masculinity.
I get it, you want to touchy-touchy all the car parts and fix stuff yourself in your yard, but 99.9% of people cannot and will not change their own oil. They don't want a toy to wrench on. People's Cars are for people to get from point a to point b as safely and economically as possible in a scenario where public transportation is not reliable or available. It's not a status symbol, it's not a toy, it's not a reflection of your personality. It's a tool. Wrenching and a new car culture will crop up around the People's Car because it always does. (People still love/hate Trabis and Polski Fiats)
I guarantee that most people would be happier with a cookie cutter Volt (very similar to a Prius) where economies of scale make parts incredibly cheap and available because it's identical to half the cars on the road. A nationalized People's Car program necessarily isn't going to produce The Homer with VIN lockouts and subscriptions and other Luxury Euro manufacturer bullshit, because the goal is to produce a huge number of cheap cars as quickly as possible and sell them for minimal to no profit.