From wikipedia:
Superleggera, also called tube-frame, is an automobile construction
technology used in classic sports cars in the middle of the 20th
Century. The name means "super light" in Italian, and was coined in
1937 by the Italian coachbuilder, Carrozzeria Touring. Unlike the
monocoque and body-on-frame methods widely adopted by the 1950s,
superleggera cars use a network of thin metal tubes as a full-body
frame. These are then covered with metal body panels, often made of
exotic lightweight materials like aluminium or magnesium alloys.
This construction technique is no longer used in production cars
today, but is still found in low-volume and hand-built sports
models.
Notable superleggera models include:
Pegaso Z-102
Most pre-1970 Ferraris
Maserati models, including the Maserati 3500
Most Alfa Romeos from 1937 to 1950s, including all Alfa Romeo 8C
2900B's, and the 2600 (convertible, 4-seater)
Aston Martin DB4, and DB5
Lamborghini 350GTV
Lamborghini Gallardo Superleggera [1]
Lancia Flaminia Convertible
BMW 328 Touring Roadster
http://en.wikipedia.org/wiki/Superleggera
