There Once Was A Canoe With A Built-In Electric Motor

Oh the silly canoe designs that have come out over the years. Here is a Dolphin Princess Electric Canoe that would have had a maximum speed of 16KM/h, weighed 85 lbs, and had three forward speeds, and two reverse. Not exactly a tripping canoe, and while you weren't using the motor the design probably would have caused enough drag to make you want to use the motor anyway.

You can see some photos of it on this old eBay auction.