Originally Posted by BeTheChange
That's so funny. My girlfriend wanted me to make a sidecar for my bike that she could pedal so she could sit next to me when I'd ride. I didn't think anyone would actually make one because it would be so wide.
Try a buddy bike
http://fun2bike.com/
We have one at the Cleveland bike co-op.
It's fun to ride as long as both riders have similar mass.
It gets a bit wonky if one is much lighter than the other.
Difficult,but possible, to ride alone.
Enjoy