It's sillier than that. Note that I said the average speed is 20mph or less; that's not the speed limit, that's the real-world speed a car will see. So they pas

It's sillier than that. Note that I said the average speed is 20mph or less; that's not the speed limit, that's the real-world speed a car will see. So they pass you, just to have you catch up to them or pass them at the next light.