[timetraveler]

There's a very good chance that it could have some effect, starting with fuel prices for the touring vehicles. Add to that, whether or not a would be concert goer could afford not only fuel for their own car, but the ticket as well as whatever it might cost them to have their car parked, could prove to rather prohibitive. Another added factor is the additional cost to those who might be attending from out of town, as they'll have to reserve a room near the concert site.