the reason for provisionals in the WoO is because of the bigger sponsors.
the sponsor expects the car on the track, hopefully up front and gaining exposure, at every race...especially televised races.
so...in that case, i can understand it.
or as scott said, a traveling series where you have to tow a ways.
but locally....no, i dont believe there is a place for them.
race your way in and if you have a bad night, try again next week.