VMX does NOT have any designated overflow parking.
There is parking available at the Orange County Convention Center:
The fee for parking at the OCCC is $15.00 per car per entry and $25.00 for oversized vehicles, i.e. buses, per entry. After 5:00 p.m., the charge is $10.00 per car per entry and $15.00 per oversized vehicle per entry. The OCCC accepts cash, traveler's checks, American Express, MasterCard and Visa.