tandem bike

Wow! I haven't seen that in ... oh, my, decades. Thankfully I saw a woman and man, not man-man tandem. You know why they're gay ...

If you haven't ridden a tandem bike, you should know that you go no faster than a regular bike and overall exertion from mistiming and not being in rhythm makes you about 89% as efficient as a solo bike. It's a nice concept ... all the wagons going in the same direction, but poor in application.