I've written about this before, after reading that a trawler emits the same amount of CO2 on a 10-day trip as 18 cars do in a year. And let's not start on aircraft or industry, but you don't see people protesting outside BA's head quarters, or the fisheries agency or outside ICI.
Note for anyone who doesn't know, Jeremy Clarkson is a presenter of a popular motoring show and an outspoken car fan who has. To quote his Wikipedia page:
On the environment, Clarkson is not sympathetic to the green agenda. He once said: "I do have a disregard for the environment. I think the world can look after itself and we should enjoy it as best as we can". He has little respect for groups such as Greenpeace, and believes that the "eco-mentalists" are a by-product of the "old trade unionists and CND lesbians" that hadn't gone away but merely found a new cause. Clarkson is not however a climate change denier, commenting on the effects of global warming - "let's just stop and think for a moment what the consequences might be. Switzerland loses its skiing resorts? The beach in Miami is washed away? North Carolina gets knocked over by a hurricane? Anything bothering you yet?". He does not, however, believe that man is responsible for global warming - "Excuse me, but I have yet to be convinced that man’s paltry 3% contribution to the planet’s bank of carbon dioxide affects the climate."