The driver who killed Sheffield teenager Jasmyn Chan was going at over 60mph - more than twice the speed limit - when he ploughed into her and her friend.
Police revealed today that Naseeb Ellahi had been travelling in excess of 60mph along Normanton Hill when the tragedy occurred on May 9 last year.
Chief Inspector Stuart Walne said it had been a ‘ridiculous’ piece of driving.
Jasmyn, 14, was killed as she pushed her friend out of the way of Ellahi’s car.
He drove off from the scene and only handed himself into police almost a week later - shortly after Jasmyn’s parents had made an emotional public appeal for her killer to come forward.
Ellahi pleaded guilty today to causing death by dangerous driving, causing serious injury by dangerous driving, failing to stop at the scene and failing to report an accident.
Chief Inspector Walne said: “This was ridiculous driving and this was dangerous driving. Anyone who gave a thought for others on the road wouldn’t have done that.”
He said was pleased Ellahi, 33, of Ash Road, Birmingham and previously from Nether Edge, had pleaded guilty, saving Jasmyn’s family from the ordeal of a trial taking place.
He said: “It gives a level of comfort. But it doesn’t bring Jasmyn back, that is the reality.
“The family are still grieving day-in, day-out with their devastating loss.”
Ellahi has been granted bail and is expected to be sentenced on January 27.