A friend had some passes and an airline ticket that he couldn't use.
So I got lucky. My expenses were $100 for ground transportation, $100 for a sofa for two nights in a great little cottage in Carmel Valley, $22 for a USGP T-shirt, $8 for a bbq brisket sandwich, free breakfast, free dinner
and fun people. So $230 for the whole shootin' match. Oh yeah, $7 for breakfast in the Birmingham Airport and a $9 pizza in the Phoenix Airport.