I'm not sure if anyone else has tried this, but now that the speedo reads off the axel speed, you can see how fast you can spin up the rear tires, so I flipped the BF1 over with the maximum possible final drive(.5 and .5) and spun the rear tires up to 6,324mph/10,179kph(it takes awhile), the analog speedo will wrap around about 15-16 times, after you do this, if you shift into 1st and let off the gas it sounds just like an air raid siren and some kind of bomb falling towards you!