Formula One motor racing teams are racing against time to perfect the new KERS technology that will give drivers a burst of extra power at the push of a button.
But whether they even use the controversial kinetic energy recovery systems once the grand prix action starts in Australia on March 29 remains very much in the balance.
With testing prohibited during the season the teams have only a few track sessions left to satisfy themselves that their systems are reliable and safe.
Williams technical director Sam Michael says the jury is still out on whether they start with the system or not, not so much from a performance point of view, but more about reliability.
