The purpose of a concept car is to push the limits of design and technology.

Sometimes, car makers or design houses go too far with concept cars. These designs are so extreme that they never make it to the road.

Bertone made three BAT concepts from 1953 to 1955, exploring aerodynamic design. They must have looked futuristic in a time of older car designs

Bertone BAT3/5/7 (1953)

The first Selene left a mark, prompting a sequel by Tjaarda. The Selene Seconda, with a Jetsons-like appearance, retained rear engine and rear-facing back seats.

Ghia Selene Seconda (1962)

GM's Astro III had its two front wheels placed too close together, making it look unstable like a three-wheeler. But just look at it!

Chevrolet Astro III (1969)

A design milestone, not the most practical, but boundary-pushing. Inspired Lancia's car

Bertone Stratos Zero (1970)

The EX-005, designed for city commuting, had uncomfortable molded plastic seats, poor weather protection, and no crash safety.

Mazda EX-005 (1970)

While the Alien broke from convention, its removable power pack technology was doomed.

IAD Alien (1986)

In 1986, Peugeot had the turbocharged 205 and showcased the twin-turbo 2.8 V6 Proxima, with 600bhp and part-time four-wheel drive.

Peugeot Proxima (1986)

The Pod detected the driver's pulse and perspiration, trying to relax them with color-changing lights and a wagging 'tail' antenna.

Toyota Pod (2001)