The worst is the northbound section of I35 between Owatonna and MSP. I don't know why, but traffic increases and shitheads all drive in the left lane.
That said, I80 and I380 is full of Iowa plates doing the same thing. The stretch from Davenport to Iowa City is bad and the CR-IC rush hour gridlock is full of them.
Yah, but that stretch is bumper to bumper full lanes and half the bumpers are tailgating semis. Worst portion of any drive I take down to Davenport. There is essentially no "passing" lane because of the traffic density.