Eight facts from the Williams launch

1. There's a whole lot more useable torque this year. "The torque curve on an old F1 engine was horrible," says Symonds. With the new units, it's short and steep and predictable. And monumental.

"Last year's cars had around 315Nm of torque, this year's is closer to 500Nm. So it's more like a diesel really. We certainly don't need eight-speed gearboxes."