It won’t be cheap — daily rentals seem to average about $150, plus 39 cents a mile over 75 (although a fellow says he rented one in Raleigh, North Carolina, for $100 a day, unlimited mileage) — and it may not be easy. You must be over 25, have three forms of identification, sign a lengthy and very limiting agreement, and participate in a tedious checklist session when you pick up the car and when you turn it back in. (“Round air-cleaner-looking thing? Check! Letters on the rear decklid? There’s the S, the H, E, L, B, Y. Check!”)