Your next car could run on air (and gas). The French carmaker Peugeot is working on a vehicle that could run partially on air. Highly efficient, the car will be doing approximately 2.9 liters for 100 kms or 81 MPG.
As the New York Times, the Guardian and Le Figaro [Fr] reported, the Hybrid Air combines a hydraulic drive that recovers energy each time the car brakes or decelerates as well as a conventional thermal engine.
These models would be ideal for urban driving. Due to be sold as early as 2016, it would be cheaper -and more efficient in city driving – than a Toyota Prius.