Vendor spots at IFO events are $250 and come with 5 general admission passes for vendor crew and guests.  Onsite vendor space limit is 10' x 40'.  Vendors are welcome to sell/promote products and services plus display vehicles.  However, no food/drink or fuel vendors are allowed since competes with track sales.  To purchase a vendor spot, click on the TICKETS/VENDORS tab just below.  Then, click on the date/location of choice and scroll down.  Vendor tab is there!