Abstract: A device for the efficient parking of vehicles is provided. The device includes: 1) a car-pan comprised of steel plate; 2) strengthening rods on the car-pan; 3) a parking space frame comprising a pair of steel C bars as its side beams and another pair of steel C bars as its end beams; 4) a number of (preferably two set) of free rollers with supports; 5) two pairs of driving rollers; 6) a parking power/control box affixed between the two side beams of the parking space; 7) chains connecting the driving rollers with the parking power/control box; 8) an elevator; 9) vertical rack-rails located at the two sides of the elevator; 10) an elevator power/control box affixed between the two side beams of the elevator; and 11) two pairs of chains connecting the driving rollers and the climbing gears of the elevator power/control box. The present device may further include 12) four cables with connectors, and 13) two balance weights between the vertical rack-rails.