Depends on the race gas you purchase. Here is Sunoco's Spec Sheet for 97+ for on road use:
260 Gold - Unleaded Race Fuels It states on the left side that they have a detergent additive in it. You can look through their other fuels on that site as well.
"Offroad use only fuel" may have Lead in it. Be aware.
Marathon states they use STP in all their branded fuels, so I suspect that Danny_Ocean received fuel with additive, just no ethanol.
http://www.marathonpetroleum.com/Products/Marathon_Brand_Gasolines/