All good points, thanks. I guess I don't have a good handle on how much it's kidnappers vs cars in a typical parent's mind. I have some intuitions, and they see

All good points, thanks. I guess I don't have a good handle on how much it's kidnappers vs cars in a typical parent's mind. I have some intuitions, and they seem to differ from yours, but I can't back that up with anything. And I probably did underestimate cars as a factor, being used to living in a large city with orderly traffic lights all the way.