A teenager suffered several injuries while desperately trying to stop some robbers stealing his car during an incident in which he was "ambushed", hit with a hammer and threatened with a box cutter in Canberra's north.
He was eventually thrown to the road by his fleeing assailants, one of whom was punished on Wednesday over what Justice Michael Elkaim described as "an horrific crime of aggravated robbery".
The ACT Supreme Court judge sentenced the 16-year-old offender, who cannot be named because of his age, to 20 months in jail.
