I have the numbers from Friday!!!
5.25 miles in 16.5 minutes and that's with two complete-momentary-traffic-related stops. That's about 19 mph. Not bad if I may say so myself, but there's definite room for improvement.
I was spinning pretty fast, IMO. Probably close to if not at 90 rpm. People really spin at 115 rpm? Gotta shape up, I guess.
The other thing is 19 mph doesn't feel that fast. When I'm riding downhill I do feel the wind (through the helmet vents) in my ... hairless head. That feels good. I wish I could tell how fast that is and then set that as a target for spinning on the flats.
Thanks all.