Yes, this is a possibility. The accidents, I mean. But accidents can occur whether you are a wizard or a muggle, you know!

This being said, I would not suggest that you consider driving any automobiles without the know-how! Muggles must go through a rigorous learning course to learn how to drive something like that! And while it is not as fast as a broom, it is many times heavier.

But that does not mean you cannot admire the ingenuity of muggles!