Tandem Bicycle
Tandem Bicycles are bikes with two seats for two people to ride together. They are great for dates, and for spending time together with someone else. Tandem Bicycles can be found in all parts or the world.
Compared to a conventional bicycle, a tandem has double the pedaling power with only slightly more frictional loss in the drive train. It has about the same wind resistance as a conventional bicycle. High performance tandems may weigh less than twice as much as a single bike, so the power to weight ratio can be slightly better than that of a single bike and rider.
On flat terrain and downhill, most of the power produced by cyclists is used to overcome wind resistance, so tandems can reach higher speeds than the same riders on single bicycles. This comes in handy when you want to just lay back and coast. Or if you are looking at gaining a high top end speed.