This is the essence of the International Race of Champions Series (IROC), which spanned over three decades and was created by Les Richter, Roger Penske, and Mike Phelps. Drivers would use the same ...

Haircuts aside, the IROC-Z was a great car then ... The first year's races began in October 1973, with the Porsche 911 Carrera RSR chosen for all drivers. For the second year of racing, the ...

We got our first look at some of them a couple of weeks ago, including a 550 Spyder, a 356 Speedster, and a 911 IROC RSR – all of them valued in the millions. But that's only the tip of the ...