It is a British thing.. they are actually mocking the pretentious douchebaggery of the stereotype people who drive the Bentleys and Ferraris they are testing.
Agreed, many times they refer to "fat useless men" that use the "launch control on the Ferrari or the "wankers" that drive BMW's 3 series. These are universal targets of well deserved derision.
The big guy (his name escapes me but he looks like 200lbs of manure stuffed into a 100lb bag) declared the GTR as disappointing because it was too robotic and soul-less or some other such crap. He sounds like an art critic describing some modern art abortion.
Also, the Florida to New Orleans challenge did it's best to portray the U.S. as populated by toothless, inbred gun toting rednecks, or in the case of New Orleans litigious and thankless peasants.
On balance the show is fun to watch but what's-his-face's rants get tiresome.