Made the trip at 5am from Johnston to downtown. The side streets were pure ice but 80/35 and 235 were fine. I drove around 40-45 and that was about average with a few people going 60+. On a side note, watched about 5 cars go in the ditch on Saturday when heading to Ames for the game. One older couple that went in the ditch drove for about a 1/2 mile in the ditch trying to get out. Don't know if they ever made it but it was kind of funny watching an old Buick just driving along in the ditch.