I'm commuting to work (sometimes) and just got an old 70s era Schwinn LeTour. It's faster than my new Schwinn (1 yr old) hybrid. I'm currently trying to get my time down. My best time for the 17 miles one-way is 50 minutes and I did that on my mountain bike with slick tires two years ago. Now that I'm on a road bike I had some wheel shimmy / death wobble. I researched it and now I know to get up on my feet and hold the bike frame with my knees. I remember doing that as a kid.