Maybe I've had a bit too much to drink for dinner tonight or maybe I've just had a long day but are you saying that a singlespeed (not a fixie), can keep up with say...a multiple at top gear? Cuz if you are...I'm saving up for that Sabrosa. You are right about that limited fitness level part, however. I've only started commuting again for about 2 months. I'm only worried because I ride low gears going to work so I don't pass out from exhaustion after trying to keep a moderate pace.