Yeah, I love going fast if the downhill allows it (smooth clean pavement, gentle curves, and good sight lines.) Unfortunately there aren't any hills that are big enough near my home range to reach much over 40 mph. However there's a particular hill I do semi-regularly on DALMAC where I've hit 52 using several of my recumbents and another one I have to ride my brakes continuously to keep it under 45 mph. I'd let 'er rip on that one but there's a congested business route at the bottom.