Yes. This is also a concern. Also people are usually fucked up. How will I know that some idiot wont jump out of his damn car during this?

A restriction would be to simply have all windows and doors locked but this can be circumvented in older cars. Perhaps a restriction would be to cover the entire car in some sort of a housing. This will lead to the size constraints I described earlier.

So all in all, a lot of safety concerns with this but I am confident Musk has something up his sleeve. Something like this is a raging yes to one of his two questions; (Yes - "[Will this do good]" | Maybe - "[Is it tractable]" ). I think a solution like this is great if we have a blank slate, which will be the case on Mars.

Edit: Spelling and grammar.