Unfortunately, it hasn’t seen a big jump in a while, all cars are getting heavier and electrified, and gas mileage is going up.

Odometry tax when you register the vehicle, with tiers based on the curb weight.

Also higher gas taxes for carbon reasons.

Add a mechanism for folks to file for a rebate for distance driven on private roads (an uncle's driveway is roughly a quarter mile, so half a mile six days a week 52 times each year would equal a 156 mile reduction).

The gas tax is supposedly to pay for roads. Now that they are supposedly paying for the roads via tolls, I guess we can expect that they will not decrease the gas tax but add another tax that supposedly pays for the roads.

The gas tax has never paid for full road maintenance. It's always been subsidized from other funds.

There are still all the roads that aren't toll roads that still need that tax revenue to support.