You can't sue people for nothing in the US either. They have a few laws. - You're allowed to try but it'll get kicked out of court.
It's all bark and no bite, if anyone actually tried it they wouldn't be able to do anything. As long as the price is paid off Tesla don't own the vehicle so they have no rights over it.
So yeah, you can sue for anything. But even if you know you'd never win the lawsuit, you can tie the other person up in court and waste their time and money.
If you sue for too little, the case will get summary judgement, but that doesn't really seem like a risk in this case unless there is a specific law that makes this clause unenforceable.