1) Drifter 2) Goer 3) Roamer 4) Rover 1) Fun chaser 2) Fun-chaser 3) Quester 4) Restless fun seeker 5) Restless one 6) Restless sort 7) Searcher 8) Seeker 9) Social butterfly 
[automobile] The Gadabout was an unusual American automobile manufactured in Newark, New Jersey from 1913 until 1915. A four-cylinder cyclecar, it had a body woven from so-called `waterproof reeds`; Wise describes it as `looking like a mobile wastepaper basket`. A much later car with no connection to the first, also called `The Gadabout` , ...
• (n.) A gadder
Gad'a·bout` noun A gadder [ Colloq.]
[n] - a restless seeker after amusement or social companionship