You said — “Never trust government to do what they claim they will do.”
Well, I’m not saying that someone should not check on it, and verify that the actual money being collected by gas tax is actually matching the money spent on the roads (per legislative mandate). Sure, check it. And if it’s not matching up, then do something about it.
I just don’t think that gas taxes have ever exceeded the amounts that have been needed to do repairs, that’s all. I would be quite surprised to ever find out that gas taxes (for example) were 50% higher than the amounts actually spent on road repairs, and related stuff — and the 50% was going into the general fund...