Wife and I were up there last year. FANTASIC trip. Flew in and rented a car to drive around. Also rented a Jeep for the Dalton Hwy. Didn't go all the way up to Prudhoe Bay, just made it to the Arctic Circle. Gas availability was not an issue but it was $7.50/gal. Be aware that if you drive the Dalton, be prepared for stone chips/cracked windshields. Thankfully I spent the $15 insurance on the rental for the cracked windshield, got a nice chip (4" crack) from the 2nd semi that passed us. Speed limit is 55 but semi's are going much faster and go balls out.