A look through the evolution of the Indy car, era by era: 

This weekend's Grand Prix of Long Beach marks 40 years since Indy cars made their debut on the So-Cal street circuit. A milestone that will be celebrated with 18 vintage Indy cars roaring on track throughout the weekend. The significant anniversary was also saluted in the latest issue of Vintage...

A couple of engines take center stage in our sixth annual Great Cars Issue. Two Cosworths, to be precise – Formula 1's DFV V8 and Indy car racing's DFV-derived DFX. Their gestations are fascinating (and contentious, in the case of the DFX), but it's the way each went on to...