Question
we are interested in building a driveway using two concrete runners for the vehicle wheels and leaving the grass in the middle. what is this style called and how can we find more information and pictures?

Answer
Neil,
Here are some links I found for you:

http://www.pacificpavingstone.com/driveway-design-menu.html

http://www.concretenetwork.com/concrete/concrete_driveways/index.html?p

http://www.drivewaydesigns.co.uk/

I went to Google for these links and typed in "driveway designs".You can go there too and type in several different direct searches for what you are looking for specifically.I think your idea sounds really neat and I hope you succeed in making it look the way you want!