How do you make a town more environmentally friendly? Those behind the development of the country's first eco-town in Bicester are encouraging new residents to reduce their carbon emissions by buying an electric car. Try before you buy schemes will be one option. But will customers be put off by the price tag and worries about charging their batteries? Katharine Da Costa has been to find out more. What do you think? Do you have an electric car or could you be tempted into making the switch? | BB