“Most” fuel tax simply goes into consolidated revenue, wherever it actually gets spent is anyone’s guess, most would agree that not enough is actually spent on actual roads.
As ice decline and ev increase (or hydrogen, fairy dust, moon rocks etc) obviously money will be required from someone, somewhere to maintain road infrastructure.
Im of the opinion that over the next 20 yrs ice are going to be taxed to the point of oblivion, people want and need to breathe clean air.
At that point, will ev or other options be seen as cash cows to be harvested… likely yes, or we can walk.