None, cause I keep em in the garage. Even when just for a short time. It keeps the birds from shitting on them.
Well, except when my gf is here, then she parks her Mercedes 300ES outside.
Or if I throw a party, then the yard is full of pickup trucks.
Then sometimes there's a cop car in the driveway at one time or another.
Or when the lawn guy comes, he has a big yellow van with a trailer. But I make him park in the street.
Sometimes the UPS truck pulls in. I don't like that cause they usually spin their wheels when they back out.
Then there was the time the neighbor kid crashed her tricycle in the driveway.
That's about all I can think of right now, except since I have the only gravel driveway in the area, people that are lost always pick mins to turn aound in and they dig holes when they spin their tires trying to make a fast getaway.