It might be wise to call the local DMV and get the requirements for "moped" classification before you buy anything or you're gonna need a valid driver's license. A scooter aint gonna cut it.. and neither is anything that goes over 30 MPH.
"... North Carolina law defines a moped as a vehicle with two or three wheels with a motor of no more than 50 cubic centimeters of piston displacement and no external shifting device. Legally, a moped's top speed cannot exceed 30 mph. Although some mopeds on the market have top speeds higher than the 30 mph limit, they are illegal for use in North ...."