WINONA, Minn. – Police gave chase to a crotch-rocket biker with an ear-busting roar and at 50 mph on a downtown street. The guy just went faster, through a red light on Huff Street to Highway 61 and then north. The officer backed off for fear the speeds were too risky but called ahead for an intercept in suburban Goodview. There an officer clocked the biker, still on Highway 61, at 120 mph. Again prudence dictated not pursuing at crazy speeds. This was about 1:20 a.m. In the blur nobody caught the bike’s license number, but the  bike was blue-black with loud, very loud, exhausts. The driver was wearing black and, with an paradoxical nod to safety, a helmet. It was white.