Car Doorstep, Door Latch Step Helps Reach Vehicle's Roof Rack, Both Feet to Stand On, Fit Most SUV, Truck, Jeep. How it works Simply hook the door step over the u-shaped door latch in each of your vehicle’s doors. This car doorstep allows you to reach your car roof safely and easily in 2 seconds. With PHATRIP car door step, you can load and strap down your bags, kayaks, bicycles, snowboards, skis, and other equipment used in your outdoor adventures, without messy up your seats.