ESPN classic has been showing old Indy 500 races this past week. Last night was the 1967 race featuring Parnelli Jones running the gas turbine car built by STP's Andy Granatelli. It ran away with the race lapping everyone except AJ Foyt but had a transmission failure with only 3 laps to go gifting t...

flyer wrote: opening the DRS,

I have never understood how this is policed. During practice and qualifying, the DRS can be activated anywhere but during the race, only at the predetermined sectors and if you were tagged in the detection zone. What is changed and what is the enforcement mechanism?