Why not consider a 'trial flight' website to be used in conjunction with training airfields. You could find them customers and offer all the preamble (including how to get there) but done as a service to the flying clubs rather than a 'thrill' offer.
I am sure that many clubs would welcome the marketing that you could offer getting them potential new trainees or even just trial flights.
How many come on here asking where their local airfield is and where they can get this and that?
Almost a 'dating' agency fitting a person with a desire to taste flying with a suitable club prepared to do it.
You could even open it up to pilots who are looking for an airfield to fly from when on holidays.
This is a lot more up market and specialised and, in my opinion, would be more attractive to the punters. When people want a trial flight they would prefer to deal with some sort of professional rather than just a "thrill provider" which all sounds a bit laddish especially if you combine it with cars.