Re: 4 Wheel Bike
If you're planning on buying one I'd check your local laws first. Many cities, states and counties will not allow four wheels. It falls into the automobile catagory and carries all the requirements for a car. 2 and 3 wheel vehicles are often exempt from many of the requirements of a 4 wheeled vehicle. Just a word of caution.
Age and Treachery Will Always Triumph
Over Youth and Skill & "Charlie Don't Ride"