Do you want to go for a ride on a bicycle built for two but are unable to find someone willing to look that foolish in public with you? Well, you might as well get a robot to help pedal instead.
Say hello to Joules the robot, a bot built to ride in the back (obviously the worse of the two seats) on a tandem bike. It's really a very elaborate way of making an electric bike, as instead of an electric motor helping to turn the gears, you have a humanoid robot doing the same thing via pedals.
I'd say that you'd need to not worry about looking goofy to ride this thing, but if you're willing to ride a tandem bike in the first place that clearly isn't an issue.