There's an electrical sub-station near a microwave antenna about 18 miles into one of my routes. I have actually made it to 308 MPH in that stretch.

Also, there was one weekend where my riding partner replaced the battery in his computer. I was able to keep up with him while doing only 16 MPH while he was traveling at 23 MPH. He slowed down considerably when the LBS reprogrammed his computer however.