Or perhaps they could just register to vote where they have their vehicles registered? Registering to vote is a declaration you live there. So long as failure to pay the car. income, and other taxes due because of where they registered doesn't disqualify one from voting, it isn't a poll tax.
You either didn't go to college or didn't have to so this.
Not only did I go to college, I participated in a presidential caucus in my home precinct and in a county convention in my home county while at college. Granted, I went to a college only two and a half hours from home by car, but even if I had been too far to make that level of participation possible, it would have been fairly easy to vote absentee, just as it was easy to register to vote when I was in high school.
Regardless, it is unconstitutional for states to set "unreasonable" residency requirements. If a college student changes their registration to their dorm room or an apartment they are renting, and have been in the state for a month, they have just as much a right to vote in the state as anyone else.
And just as much obligation to pay the taxes expected of any other resident. I certainly hope none of these non-tax paying "residents" also try to claim in-state tuition rates.