I average somewhere around 13mph on my Trek hybrid. I topped out at 32mph several weeks ago on a pretty large downhill, pedaling like mad. I'll add that my ride is nowhere near light weight and I'm a pretty big guy at 200lbs. I also carry 8lbs of batteries and haven't yet ridden outside of the winter months. I hope to be noticibly faster once I shed the lights and layers of clothes once spring arrives.

Today I bungied a 15lb (and farily large in volume) package to the side of my rear rack and rode to work with the extra weight penalty. To my surprise, it didn't slow me down at all, and to be honest, didn't feel like too much extra work. It was encouraging, although discomforting because I fear that I might not be much faster come spring after losing the extra bulk.