In the U.S., the moped, or scooter as some call it, is typically associated with teens who haven't picked up a license yet or nerds with who still live in their parents' basement. However, in Europe, it's really not unusual to see full-grown adults riding around on 50-100cc two-wheelers. Thank Vespas for that. Some celebrities have taken on this mentality over here in the U.S. and have been spotted out and about riding solo or with some friends. Check out these 25 Photos of Celebrities Riding Mopeds.