I don't think they'll make a car that gets 500 miles per charge, mostly because of recharge issues. And I don't think the battery swap will ever work in the next 30+ years.
What you'll see is the 120-160 mile EV commuter car that is relatively inexpensive and either a car or crossover that works in multi-car households. Then the EREV models that get 40-50 miles per charge as a family's first car. Along with these two items, a proliferation of EV charging infrastructure in particular places where people leave their cars parked for an hour or more (shopping malls, movie theaters, etc) to extend that range further.
Volt 2012-14861 Cyber Gray
Best EV Range so far: 44.3 Mi
Highest efficiency: 109Wh/mi (15.6 mi, 1.7kWh) (downhill, obviously)