Concrete edge requirement - Driveway help for a novice

[vepas]

I checked the search engine and couldn't find the answer I was looking for, but I know it is probably out there. My question is I want to put in a driveway using block or brick, and what I want to do is put in two paths just wide enough for the tires on my vehicle, maybe slightly wider, with grass in the middle and on each side. Now, I found this page
http://www.pavingexpert.com/bpvseq01.htm
which says I have to put in a concrete edge. My question is do I really need to do a concrete edge (or haunch) for each path half a meter wide? I do get a good bit of rain where I'm at, and the soil seems to be a mix of clay and sand. I'm new at this and still planning, so any help you can give me would be very much appreciated. Thanks in advance.

[Suggers]

You've found the most fantastic site in the world.
You've found the answer to your question - yet still ye ask to haunch or not to haunch - that is the question?
( I'm currently teaching my horses to haunch - filthy habit....)
ps - I'm in love with the Tarmac Lady......