I have found several.. I have also found trucks, vans, hummers, motorcycles, firetrucks, ambulances, police vehicles, bicycles, skateboards, scooters, mopeds, boats, trains, planes, helicopters, tanks, jets, pogosticks, and segways. Oh and also snowmobiles, quads, trikes, jetskis, skis, snowboards, surfboards, and horses.
Someone who's found something I missed?