There is an edited version of this video making the rounds showing only seconds before the impact and without the needed info. At 1:50 you get the dash cam from the ramming patrol car.
Police say the suspect, Mario Valencia, confronted them with a stolen gun and fired one shot in the 5600 block of West Coca Cola Place before being struck by the cruiser.
Valencia is accused of a series of crimes in Tucson and Marana on the morning of February 19, including stealing a rifle from the Wal-Mart in Marana.
Read more at http://www.liveleak.com/view?i=996_1429049368#5yy1ouTMmukJAEGH.99
Not an elegant solution, but I must say it was effective.
Now, Could you as a civilian, apply the same tactic? I am going with no as the subject was leaving and you wouldn’t be in imminent danger. You could make the case that there was a continued danger, but legally I would consider it risky.
What we cannot deny is that a car can be an effective weapon when needed.