CArs don't have to be given a solid block of concrete, thopugh, do they? There could be a semi permeable membrane topped with gravel.stone chips with paving stones where the wheels go.
We have an old stone farmhouse and the garden goes across the front and round one side. The 'front' bit is, frankly, a bit of a mess because I'm no good at garden planning and too softhearted to pull up plants which are thriving. Replacing a tiny, mossy lawn with gravel was very successful though, apart from the fact that it's a brilliant medium for seeds and the plants in the border have spread themselves very freely. On the other hand, it allows me to grow things like rosemary which don't thrive in my clay soil.
Thought this might amuse some of you!
Updating bathroom with a walk-in shower unit.

