In that case, we should require all semis to stay in the right lane, then put all those unmarked cars to good use writing tickets on the ones that move across the line. Maybe even impounding the ones that roll in the left lane at 15 under the speed limit for miles on end…I doubt they will raise the tax at all. They want the revenue from the trucks. I-35 and I-40 are major truck routes and many are able to drive right through without needing to buy fuel. Not all, but many.