1991 Porsche Carrera 4. Red version

The Porsche Carrera 4 is the most technically sophisticated 911 ever to enter series production.

A rousing marriage of four-wheel drive, a 3.6-liter rear-mounted flat six producing 247 hp, and a stout platform with a redesigned suspension creates a whole as seamless as a ball bearing. Remarkably stable, wickedly fast, and astoundingly easy to drive.

Read more: Technologies, transport and equipment ...