We drive to Montana in the spring and then back down here in the fall. Trip is about 1,500 miles, one way. 
As it stands now, there are no federal road taxes for EVs that I'm aware of. Some states assess an extra fee in lieu of gas tax to account for lost revenue from the state gas tax. MT will charge me an extra $200 for license this coming year.
In 2022, less than 1% of vehicles on the road were EVs but about 8% of new sales were EVs. From that, the percentage of EVs on the roads should grow. No way of knowing what percentage of miles were driven by EVs. I would expect total mileage per vehicle would be less for EV than ICE because many more EVs are used for short commuting today. Again. I would expect for that number to grow in the future but I don't think that the loss of gas tax revenue is as significant as some would have us believe. As the share grows, I'm pretty sure it will be taxed.
The more densely populated areas of the country are still struggling with air quality issues so they may choose to give EV users a little slack if they decide the health benefits from cleaner air are worth a little less revenue. I would expect CA, NY, FL, and AZ to be some of the states to do this. NV seems to be a big proponent of doing this to keep the Vegas and Reno air a bit cleaner. 
Please keep in mind that when I say cleaner air, I'm not really considering CO², but rather particulates, toxic gasses and NO^x that have a demonstrated health hazard.