For those new to the motorcycle world, below are the definitions of the three kinds of vehicles mentioned above.MOPED - small engine (usually not greater than 50cc), low speed, pedal-powered, not for highways. SCOOTERS - step-through chassis with footrest platform, 10 to 12-inch wheels, runs with engines 50cc and 250cc. MOTORCYCLE - designed for high speeds, better acceleration, large engines 250cc or above, larger wheels 16" and above QUANTA - A motorcycle with a step-through design and 17-inch wheels. It is designed to perform on par with a 100cc vehicle. And best of all, it's electric and built for all-terrain.