I live about 1/2 mile or less from that highway near downtown where those were and you can hear bikes SCREAMING down it all night long. Lots of your parking lot queens do it when they're traveling back and forth. Also, they will do loops around Dayton using the highways. They hit 75S, 675N, to 35W back to down town hauling ass the whole way and riding wheelies. When I read that they were going 100+ by witnesses, I instantly got a feeling it was some people doing that crap. They gather in the Oregon district a lot and do that shit.