Andrew Davis, ETA director, said: 'The Government must take the lead and make a difference by taxing what is bad. It is not enough to say people should be using public transport - public transport is better but it is still bad for the environment. Zero emissions is what we need and technology is going that way.'
'The company car will still be around in 10 years' time but it will be the journeys which are not worth driving which will disappear when people calculate what it is costing them.'
ETA is also calling for companies to encourage employees to travel by train, bus or bike, offering them a cash bonus instead and opt for smaller cars.
Davis said: 'Some companies are doing what they can by developing transport policies, but it will only be when the Government takes the lead through taxes that all companies will act.'
Stewart Whyte, director of the Association of Car Fleet Operators, said: 'Modern cars are the cleanest on the road and the Government should be doing more to get old bangers off the roads.'
Green Transport Week is being launched in Rochester on Friday, with a conference 'Laying the Foundation for Less Car Dependent Living.' During the week, motorists will be encouraged to leave their car at home at least one day and use a bike, walk or take the bus. Rochester's High Street will be declared a car-free zone in line with European Car-Free Day, on September 22.
European Car-Free Day will be launched at the House of Commons on June 14. Towns and cities in the UK will be expected to join in the event with car-free zones declared in more than a dozen European cities, including Paris, which has closed 40 miles of roads.