unwanted car fumes

Hi all, I have a space that is at the back of a restaurant and thus has an adjoining carpark, it was full of "weeds" and grass approx 5ft high which I have chopped and dropped, I have layered with card and have an abundance of horse manure, it's going to be a herb garden with some veg and wild flowers. I was just wondering if anyone had any advice on a small 3ft hedge plant or certain types of flowers or herbs to use as a border, that keep car fumes off what would be herbs for medicinal and eating. Will post some pictures if anyone is interested. The climate is north east uk, right by the seaside. Thanks in advance X

More pics

Welcome to premies!

Here is a list of plants studied by NASA for air filtering properties: http://en.wikipedia.org/wiki/NASA_Clean_Air_Study

Any of those grow well in your climate and fit the space?

Thanks, yeah the chrysanthemam looks good! X