Here are 3 different designs for bicycle-powered buses:

1. The Buscycle


(image via Ecofriend)

2. Eindhoven University’s human-powered bus (also see our previous coverage):


3. The Velodisco:

On one hand, these all look pretty inefficient. On another, shouldn’t you have less wind, drivetrain, and surface resistance to overcome per person on a well-designed setup like this compared to single-person bicycles?