In this classic Top Gear segment, James May takes the Lamborghini Countach out for a road test. Video after the jump.

The Countach used a skin of aircraft-grade aluminum over a tubular space frame, as in a racing car. This is expensive to build but is immensely strong and very light (in spite of its size, the car weighs approximately 1500kg (3,300 lb). The underbody tray was fiberglass. Although originally planned as a 5 liter powerplant, the first production cars used the Lamborghini Miura’s 4 liter engine. Later advances increased the displacement to 5 liters and then (in the “Quattrovalvole” model) 5.2 L with four valves per cylinder

In this classic Top Gear segment, James May takes the Lamborghini Countach out for a road test. Video after the jump.

The Countach used a skin of aircraft-grade aluminum over a tubular space frame, as in a racing car. This is expensive to build but is immensely strong and very light (in spite of its size, the car weighs approximately 1500kg (3,300 lb). The underbody tray was fiberglass. Although originally planned as a 5 liter powerplant, the first production cars used the Lamborghini Miura’s 4 liter engine. Later advances increased the displacement to 5 liters and then (in the “Quattrovalvole” model) 5.2 L with four valves per cylinder