Posted January 19, 2011 - 06:46 PM
sounds like a muddy problem to me. Also if you don't lay down a landscape fabric before the topsoil, theres a great possibility the dirt will seep down through the stone, the stone works it way to the top, and eventually you'll have a muddy, stony mess. If you decide you don't like it, it would be very hard to scrap off the topsoil and get back to stone, so you will need to add stone. I tried using my side yard as a driveway, but after only a couple months the mud, and dead grass got to me, so i scrapped away the topsoil and added sub-base, and never looked back.
Some guys suggested the blocks, or grass mats. They're a great option, but not cheap. Also i don't know if they're intended for everyday use. I always see them advertised for sports field parking areas, where they onlt get used now and then. I could be wrong.
Good luck with whichever route you choose, i think a grass driveway sounds very cool, but not very realistic.