Asa Hunter, 16, was at the wheel of the car that killed Thomas Drane, 61, on Mount Road, Gorton, Manchester. His body was recovered 37m (121ft) away. Manchester Crown Court heard Hunter, who had an Anti Social Behaviour Order (Asbo), then fled from the scene.
In another incident three weeks later, the defendant, then 15, drove into a group of youths, badly injuring two of them, the court was told.
He admitted causing death by dangerous driving, dangerous driving, causing actual bodily harm, causing grievous bodily harm and breach of an Asbo.
The jury was told he had 19 convictions for 49 offences, committed since 2005.
Judge Anthony James Hammond jailed him indefinitely, describing him as a danger to the public.
He must serve at least three years before being considered for parole and was banned for applying for a driving licence for five years.
So he could conceivably be back driving a car when he's 21 years old.