Bicycle built for four

This afternoon we rented a "family bike," as Sam called it: 2 seats with pedals for Mom and Dad, 2 seats to ride in for the kids. Both kids were a bit bummed at first that there were no "paddles" for them, but quickly started enjoying Daddy's strength once we got going. They were screaming like they were on a roller coaster as Joe hit the speed bumps on the road. (I pedaled too - I just couldn't quite keep up with how fast he was going.)
"Hey Mom - I don't think you are doing your part back there!"