News out of the States are saying that the BAR Honda 007 (this year's car) in California, while testing at an abandoned 3000-metre airport runway, broke the 400 km/h mark with a 415 km/h top speed. That's 258 Miles Per Hour! And also, that's not their official run at the Bonneville Flats either.

Later on in the month, they will be making the Bonneville run, in a more specifically designed aero trim. The test they ran on was using an F1 race-legal, low downforce set car. Guinness will be there to record top speeds, as this will be the record for "Fastest Top Speed for a Race Car". The first attempt at Bonneville was rained out.

Edit: On the official run, they couldn't break any records because the coefficient of drag over the tires was too much, and air conditions caused them to slow the car down.