A new air-powered car could cut petrol bills by up to 80%, it has been claimed.
Peugeot said it will launch a 208 that combines a normal internal combustion engine with a new system running on compressed air, in 2015.
The car will feature special hydraulics, an adapted gearbox and compressed air cylinders, which will allow it to run on petrol, air, or a mix of both.
When the car is driven at a speed below 43mph the air power is automatically switched on, meaning it will be available for "60 to 80% of the time in city driving", according to Peugeot.
The new system, called Hybrid Air, can re-use the energy which is normally lost by slowing down or braking and is a major breakthrough because it means expensive batteries will no longer be necessary.
Hybrid Air cars will be around £1,000 cheaper than standard hybrid models and could achieve around 117 mpg by the end of the decade, the carmaker said.
A Peugeot spokesman said: "We are not talking about weird and wacky machines. These are going to be in everyday cars."
Copyright Press Association 2014