Porous Concrete is made with little or no sand and generally uses larger pea gravel, so the look is not as smooth as conventional concrete. It is available through most concrete suppliers.
Drivable grass ~ create a "green" driveway using porous concrete grids that are planted with a ground cover between the cement ‘pavers’. A creative & environmentally friendly storm water management solution. You can mow your driveway :)
clay pavers are one option, barely-there but decorative turfstone is the other.