Citroen concept car uses compressed air to cut fuel consumption

Citroen's latest fuel-economy focused concept car promisies to cut consumption by 30 percent by storing waste kinetic energy as compressed air which can power the car for short distances with zero emissions. Previewing at the Paris auto show, the C4 Cactus Airflow 2L is 100 kilograms lighter than the already available production model and boasts improved aerodynamics to further cut down on fuel consumption. Matthew Stock reports. Credit to Reuters.