In BC, especially northern BC, the most common police vehicle seems to be a crew cab 4x4 pickup.  This configuration seems to meet all of the requirements mentioned in the article.  These trucks are fast with big power, roomy, tremendously protective in a crash, unstopped by any road conditions, and can intimidate other vehicles if necessary.  They can also be used to transport atv's and other equipment plus pull trailers with snowmobiles.