Allan Simpson Wood crashed head-on into Bryan McCron's car in July 2010, killing McCron and injuring his 17-year-old son, as well as the passenger in Wood's own Chevrolet pick-up.
The McCrons were out delivering newspapers when Wood crashed into their car at nearly twice the speed limit at about 3 a.m. PT, according to an agreed statement of facts read in Surrey Provincial Court on Monday.
The front of McCron's Toyota was crushed and his aorta was severed, it said.
His son Connor, who was in the back seat, called 911 while his father was bleeding to death, and was assaulted by Woods.
Wood pleaded guilty to assaulting the teenager, shoving him against the car and punching him in the stomach.
The teen said he smelt liquor on Wood's breath after the collision, however no breath or blood samples were given to determine impairment in this case.
Wood has a history of impaired driving, including one criminal conviction and other 24-hour suspensions.