I wondered the same thing. Having watched the clock on the video, and assuming that there are no length edits, the following should be true for a 19 second 1/4 mile (since the Prius started rolling at about :40.5 seconds and seems to have crossed the line just before the 1:00:00 mark): 1/4 Mile ElapsedTime19 seconds1/4 Mile MilesPerHour69.74 This calculation is based on the code found here: (60' to 1/4 Mile Calculator - Wallace Racing)