I just know that headwinds make me look good. My lowracer has very little frontal area, so while a headwind will slow me down, it slows everyone else down even more. OK, tailwinds make me look good, too; at least until the point where I'm running out of gears. Same reason: aero drag doesn't start until I'm going faster than the wind (true for everyone,) and even then my smaller frontal area means less resistance and more speed above that point.