i have two custom built motorized bicycles,one is a beach themed cruiser bike and one is a tenspeed.both have brand new 49cc motors and have been finely tweeked and are ready to ride! no insurance,no license,no regestration required to ride these fun machines! Aprox25-35 miles per hour and 150 miles to the gallon(mixed fuel) I ride them in the winter(not really as cold anymore)good x-mass gift! much better than moped!! the cruiser is elaborate and is 800 and the tenspeed is 600.No kooks,lookyloos,only serious buyers!