The publisher will rent a solar powered RV camper, with a weekly rental fee plus a per-mile charge. The rental company hasn't prepared the final estimate, but showed the publisher two recent invoices for one-week rentals. One was $1,188.15 for a 540 mile trip. The other was $1,310.55 for an 880 mile trip. Carlita will pick up the camper in the first city on the tour and leave it in the last.