I hear you on keeping up with the younger crowd. Last night I kept up with a fit 20-something for about 3 miles. I was riding my brakes on the best downhill in town, then keeping up the rest of the time. (I wasn't in Race Mode, just seeing what would happen) She kept peeking back. I loved it, a fat (late)40-ish woman keeping up. She lost me to cross street traffic, but it was fun while it lasted.

I love that bike. I'm starting to feel sorry for my husband, he's starting to have to Work on our rides.