theres a new movable rear wing to aid in over taking and also....... 1.6-litre, four-cylinder turbos with energy recovery and fuel restrictions to replace current 2.4-litre normally aspirated V8sFuel efficiency to increase by a target of 50%Overall power to remain same at approx 750bhpChecks and balances to ensure costs are contained and performance across all engines remains comparableFuel to be limited by fuel-flow restrictions and a stipulated maximum tank capacityPlan for advanced 'compound' turbos to be introduced in subsequent yearsPower of Kers energy recovery systems to increase from 60kw in 2011 to 120kw in 2013750bhp from a 1.6