electric bicycle

Today I was out on a ride with Weaver and we saw a recumbent bicycle with an electic motor attached to the chain drive. I decided since he was going so fast that it would be fun to get a draft off of him. This guy was barely pedaling, but he was cruising! I told Weaver I wanted to catch the guy and get a good draft. I went sprinting after the guy, I was going about 30 to 32 mph and I was very slowly catching up to him, then we hit a very small hill and I was really closing the gap, then we hit the flat again. I was pretty well spent by this time, and the guy and his electric bike hit the flats again, and he was back to his 28 to 29 mph hour pace and I was not going to make an all out effort again to catch him, I still had 20 miles to ride.
It was really cool to see this little electric bicycle cruising at a good speed. It irritated me at first that I couldn't catch up to him, but then I realized that I may be able to go faster than him, but my legs are not going to beat a good electric motor.