BMW's i3 car, inspired by Colin Chapman's philosophy of "adding lightness,"

uses materials like carbon fiber reinforced plastic (CFRP), aluminum, and magnesium.

These materials are rare in mainstream mass production cars due to their high cost and difficulty in mass production.

The i3 is made up of two modules: the life module, made of CFRP, providing exceptional stiffness and safety for occupants.

The drive module, made of aluminum, houses the chassis and drive elements,

while magnesium supports the instrument panel.

The initial BMW i3 with an 18.8 kWh battery weighed only 1,270 kg,

making it the first mainstream car to use these materials and techniques.