> (for example the airbag is malfunctioning) Then the car/vehicle is no longer road-worthy/road-safe and has to be repaired before going on public roads again.

> (for example the airbag is malfunctioning) Then the car/vehicle is no longer road-worthy/road-safe and has to be repaired before going on public roads again. If the airbag isn't e.g. discovered in a repair shop, during an inspection or any other place where the car can be fixed without rejoining the public roads it has to be safely towed/transported to a place where it CAN be fixed. And incidentally it's not a problem of "muh car == muh freedom". If you want to drive a vehicle not safe by the standards everyone has to adhere to you're free to do that on private property. If you want to drive a vehicle on public roads where probably nobody knows about anything stupid you've done to the vehicle, i.e. a 1-2+ tonne lump of metal, glass and plastic probably with some sharp points/edges moving at a significant speed quite close to other people without any protection whatsoever. It's just horrifying accidents waiting to happen. Let's take the example of someone fucking around with the airbags in the car. If they're not known good, they might as well go off at any moment during the drive, possibly incapacitating the driver while the car is moving at normal road speeds, making the car veer around wildly and generally being an extreme hazard. There is a reason cars have to certified and adhere to standards of road-safety/road-worthiness. P.S. When a topic like this comes up I always have to think back to my father when e.g. a commercial/TV-programm about super-/hyper-cars came on. He almost always said "Dafür bräuchte man eigentlich einen Waffenschein." ("One SHOULD need a weapons license for that thing.") in the sense that in our country (Germany) prospective gun owners need a license which IIRC requires amongst other things a psychological examination/certificate to ensure that no irresponsible, no mentally-ill, no mentally-challenged etc. people get the license to own guns. MEANING driving around on public roads with something that's essentially a road-going mix of a missile and a door wedge should probably something like an idiot-test. I mean it's already standard practice to deny RENTALS of cars above a certain power threshold to people under something like 23 or 25.