‘Hybrid’ engine for F1?

Toyota are investigating using their innovative fuel-electric 'hybrid' engine technology in Formula One. Fitted to the road-going 'Prius' model, the car – using far less fuel than a normal passenger vehicle but producing comparative power – is propelled by a combination of engine, electric motor and battery. And, according to Toyota's F1 engine designer Luca Marmorini, the technology could be adapted for use in grands prix. But he told 'Motor Trend' publication that hybrid engine design is forbidden in the FIA technical regulations.