2-3 cars : 20′ x 20′ ( 6.1m x 6.1m ) $ 2,800

4 cars : 22′ x 32′ ( 6.71m x 9.75m ) $ 3,395

7-8 cars : 35′ x 35′ ( 10.67m x 10.67m ) $ 3,900