Needs, wants, fantasies and reality.
How much does it cost to keep the Prius? Insurance? Tags? Maintenance?
Pros: Go whenever you need in your own car. Cons: Another car to maintain and insure. (PS. When I went to one car from two my insurance actually went up.)
How much would it cost you to rent? How would that compare to the cost of the Prius? How much would you get from selling your Prius? How many days of car rentals could you afford with that? Cons: can't drive it across the boarder.
Pusher trailer: How much do you really want to spend the next several weeks/months sawing a car in half? If you really want it, go for it!
Do you live where it's sunny? I once figured it was possible to attach about 6kW of slide out solar panels to the roof of my Leaf for a bit more than $2,000. Pros: light weight, can charge anywhere there's sun, shades car in any parking lot to help keep battery cool and charging is free!
The idea was to make it all in a large curved panel held up about 2 feet above the roof car that extends from front bumper to end of boat tail with the ability to tilt from side to side in order to get the most charging when parked.