New garden, parking

Current arrangement
Space for one car on tarmac.
Little space for plants.
Lawn.
Replace lawn with gravel
Much more space for plants.
Possibility of second parking space.
Three types of surface - busy.
Replace lawn, tarmac and paving with gravel
Much more space for plants. Possibility of second parking space. One type of surface.
Must deal with manhole cover.
Gravel must be just right. Firm enough for car. Not muddy in the wet.