> how would you determine what a person should receive?
If it's truly an incentive, incentivize everyone. I know people who make $1 million/year who will argue over $10. $7500 would absolutely affect their behavior even though they can afford an EV without it.
People could have multiple children, debt, sick relatives, etc.
Maybe that 300k person in Nebraska had 20 kids or something. Using the area as a measurement is complex