One of the greatest features of the Targa Florio was that the practice laps around the 44.6-mile Sicilian road course were not closed off to traffic. Top flight prototypes shared the roads with oxcarts. It was insane.
Thankfully, no one is running R18 TDis or Toyota TS030s next to unsuspecting motorists as drivers have a hard enough time dealing with other professionals, let alone random people. Still, now that old racing cars are out of duty as sporting equipment, they can live new, unexpected, exciting lives as real cars.