</font><font color="blue" class="small">( Cover your limestone gravel surface with a couple pick-up loads of limestone sand, pack down with tractor. ... Almost as good as asphault at a fraction of the price. )</font>
I've heard of that before. I've also heard it gets soft when it gets wet, which could happen since my carport doesn't have sides. I guess it would work OK on a walking trail, but I'm not so sure about a driveway.