Search for contradicting opinions and you will find just as many.
This is some guys blog that is the current president of a road club for drivers rights, not an economist.

Some of the points are just dumb:

He starts saying how this only effects 2% of the roads in the US. Then he goes on to saying 1/3 of our daily traffic is on the interstate and thats not all of the 55mph+ zones. He is using numbers to to make things look differently. He then says that if the states could change it from 55 to 65mph there is 'only' a .18% difference.

Gasoline - Wikipedia, the free encyclopedia
we used 360,000,000 gallons a day in 2003


lets say we are using the same amount and now the cost is at 3.85 thats 1,386,000,000 a day. 1,386,000,000 x .018. That 'only' .18% difference is now 24,948,000 A DAY LESS. And we dont have a 65 ours is 70 so its even more. Im sure that could help boost the economy quit nicely instead of sending it back overseas.

More traffic cops to enforce the law? are you fucking kidding me? They already have to enforce the law a differnt speed wouldnt make them be there more since they are out EVERYDAY anyways. Also, stop acting like god damn conspiracy theorist, the money from the tickets doesnt go to new pools for their houses, they dont ever see it. Its sent to the state and redisperced.


Then he talks about wasted time. Fuck, id rather not go into anothe great depression then letting the dumbfucks of america having an extra 30 minutes to watch Reality TV.