Tandem Bikes -> A form of bicycle designed to be ridden by more than one person.
	Electric Bikes -> A bicycle with an attached motor used to power the vehicle, or to assist with pedalling.
	Recumbent Bikes -> A bicycle that places the rider in a laid-back reclining position. For most riders, the advantage of riding a recumbent is that it is more ergonomic; positioning the rider's weight more comfortably.