Zero-emission cars are for many the ultimate goal in green motoring: a vehicle that produces no harmful emissions from its tailpipe, or indeed, one which has no tailpipe at all. Currently, zero emission cars fall into two distinct categories. The first are hydrogen fuel cell models which make use of a chemical reaction to produce electricity by combining hydrogen with oxygen (producing water vapor as a by-product). Very few of these models are on the roads, due to both high development costs and a lack of hydrogen infrastructure. Much more common - but still relatively rare - are battery-powered electric cars that are recharged by plugging in to the existing power grid, which produce no emissions of any kind.
Let's take a look at 10 of the leading zero emission cars you can current buy in 2015.