Channelling energy.
The rigid bodyshell on the BMW Z4 Roadster.
Whether on racing cars or cranes, engineers often opt for a triangle structure to provide the perfect connection when distributing large loads using as little material as possible. On the BMW Z4 Roadster, specially designed supports positioned between the plates lend the bodyshell outstanding rigidity even when the hardtop is open to provide a level of steering precision and passive safety usually associated with a BMW sedan.
