I was going to make the same observation Silverbullit made. The driver (if that was who the video interviewed) overstated his (or the car drivers) actual actions. The clouds of white "smoke" at the starting line for staging were typical jet car show effects. Dump fuel into the afterburner (AB) except do not engage the ignition source except occasionally to give the big bursts of flame/sound. Sounds and looks cool.
Really for the first half of the run it looked rather unremarkable. Even slow to me. The driver did sporatically engage a lit AB toward the end of the run but it did not appear to be on for any continuous amount of time. The functionng AB is evident in the video when you see the ball of flame out the back of the engine. Otherwise just plane old regular thrust from the engine.
No question the car is fast and the mile speed speaks for itself. But just think if he had the AB on continuously for the last half or even last one-quarter of the mile. Probably would have taken off.....