A new service in our area (driveflow) - for a "mere" $800 a month (or $1400 if you want fancier cars), you can actually subscribe to a virtual garage of cars. For your money the concierge will deliver a car to your specs (sedan, coupe, SUV, truck, convertible). It does cover unlimited swaps, and "everything but the gas", but dang, that's a lot of money.
I think I'll stick with my paid off car that costs about $75/month, tyvm.