Moto Designshop has come up with an elegant, if expensive solution, an "animated facade". What would normally be a garage at grade is a parking space on a lift with a green roof on top- you drive in, drop the car into the basement and voila, you have a green front courtyard.
The Grid House, being built in Philadelphia, also has a moving wood screen as well, so that the courtyard can also be private green space. It is a really clever solution to a difficult problem- how to deal with cars on an 18 foot wide house.
Because the walls are glass you can admire your car;
Press a button and drop it into the cellar;
And admire the view across your green roof.
The drawing shows the different options for the garages and facades.
They are pretty good with a mouse, too; the renderings are almost photographic.