Citroen's C4 Cactus Airflow 2L maximizes fuel economy (pictures)

PARIS -- Citroen's new Airflow 2L concept is based on a standard C4 Cactus, a four-door hatchback with a low profile.

Shown off at the Paris Motor Show, the body has been remade with composite plastics, high-strength steel and aluminum to reduce weight.

The underside of the concept uses a fairing to increase air flow.

Under the hood is Citroen's previously shown HybridAir system, which uses compressed air to help drive the wheels.

Air intakes in the bumper automatically open or close to maximize aerodynamics.

Automatic wheel flaps also adjust to maximize aerodynamic performance.

Citroen calls this side feature AirBumps. They're designed to protect the sides of the car from damage.

The orange flaps help guide air around the Airflow 2L concept.

The cabin of the standard C4 Cactus shows LCD panels for instruments and infotainment.