Button insists will not get into car unless 100 percent sure of its safety ahead of F1 season opener

British racer Jenson Button has claimed that he would not go into a car unless he is 100 percent sure that it is safe, following the mysterious crash his McLaren teammate Fernando Alonso suffered three weeks ago that ruled the Spaniard out of the Formula One season-opener.

Alonso suffered a crash during pre-season testing in Barcelona, nearly three weeks ago, and he was knocked unconscious and hospitalized by the impact that ruled him out of the season-opener. And Formula One experts are no closer to unlocking the reason for the Spaniard's baffling Barcelona accident.

The FIA has launched an investigation, and the drivers' safety organisation the GDPA is closely monitoring events for all of their famous Formula One stars, with theories ranging from a rogue 700 watt hybrid discharge in the cockpit, to faulty steering, The Mirror reported.

It has been reportedly revealed that unreleased circuit CCTV footage suggests Alonso could have been unconscious at the wheel before the smash.

Button arrived Down Under for Sunday's Australian Grand Prix as a prolific winner of this race: three triumphs in six years with two different teams. He said that he would not get into a car unless he is 100 percent sure that it is safe.

The 2009 championship winner claimed that he spent hours going through the data with the engineers and talking to them about the incident, adding that he did not, as far as he is aware, get an electric shock and there was nothing wrong with the car whatsoever.

Button insisted that he needed to know that before getting into the car at the next test, so he made sure of it. He claimed that when one is driving a Formula One car at the limit, one needs to be sure.

Button said that he trusts these guys and that is why he has the confidence to drive it this weekend, adding that everything is working correctly. He said that the engineers have got every test under the sun to understand steering loads and everything involving the car.