JEREMY Hunt joined David Cameron in test driving an array of environmentally friendly vehicles at Dunsfold Park, near Cranleigh, on Monday April 24. The South West Surrey MP joined the Conservative leader at the former airfield to try out the Toyota Prius T Spirit, Ford Focus Flexible Fuel, Honda Civic Integrated Motor Assist, Opel Eco VX220 Speedster, Reva G-Wiz and the Modec VanThe visit came as Mr Cameron unveiled new plans to encourage Britain's families to ""go green"" by switching to more environmentally-friendly vehicles.Announcing that he is swapping his Government-supplied official car for a lower-emissions, hybrid alternative, the Conservative Leader said during the visit: ""To help tackle climate change, we must be for greener cars, not anti-car. Today, many families want to become greener, and they're looking for more options to go green. We should help them.""And stepping up the Conservative Vote blue, Go green campaign agenda, he unveiled a series of options - to be considered by the Party's policy group - for making transport greener. These include: * Setting a new target to bring the average emissions level for new cars down to 100 grammes per kilometre by 2022 through an incentive programme which could include differential rates of duty, expanding the existing company car scheme, and exempting greener cars from parking and congestion charges* Making it easier for people to walk and cycle on short journeys* And improving public transport.Mr Cameron added: ""We must give people, particularly those living in our towns and cities, serious travel options that don't involve the car. Around a quarter of all car trips are under 2 miles in length. If we're serious about tackling climate change - and incidentally about improving public health too - we need to help make it possible for people to walk or cycle on these shorter journeys."" Jeremy Hunt, who also test drove all the vehicles, said: ""The idea to encourage the wider use of more environmentally-friendly vehicles in the UK is long overdue. Britons walk less than almost any other Western country except Greece, and the UK cycling rate is 40 per cent below the EU average. Not only is that bad for the environment, it is bad for our long-term health prospects. I think the solution is not to stop people from owning and using cars, but to transform the cars we drive. I was delighted to test drive the vehicles and was thoroughly impressed with all of their performances.""