They broke F1 class records three times.
During the final attempts, the Honda set two LSR’s for GP cars. Over the flying mile, the car achieved an average speed of 397.360kph (246.908mph). The second record was over the flying kilometer, an average of 397.481kph (246.983mph).
Earlier in the week the car hit 400.454 kph on one pass of the measured mile. How about that, F1 cars can go out and knock on 250 mph.