Your local RV and Auto dealerships are often GREAT sponsorship prospects. For their underwriting/sponsorship dollars, have them park a vehicle or two outside your venue with a couple of salespeople hanging around. A high end event (Michael Bublé, Tony Bennett, London Symphony Orchestra, etc….) would be a great event for a Jag, Lexus, Mercedes parked out front. Baby boomers might be more than interested in RV, 5th Wheels. Super young crowds might be a great fit with Smart Cars. These are GREAT selling opportunities for your sponsor.