Today I rode my latest bike to work for the first time. I've been psyching myself out worried I would have to leave way earlier b/c it's ss like my previous steed but it's slightly heavier and chromo, AND has 63 GI as opposed to my previous bikes 69.3. I just don't feel as fast on my steel steed, but lo and behold I averaged 16.5 mph today. My best on the aluminum bike was 17.5 avg mph. GREAT SUCCESS!!