I was gonna say Thunder Alley here in Lincoln but I'd be lying if I said it were cheaper. It's $6/person/half hour or $10/person/hour. Otherwise, I don't believe there is anywhere else. Honestly, I would dish out the $6 per half hour since for 1, your driving a Jeep(not so good gas mileage) and 2, gas prices are increasing. Your probably using $6 in gas going back and forth from Neb City..