Oh, and mobile lift you mentioned means it is mobile to move to where you have the car, not that you can move the lift with a car on it. The wheels will most likely be sprung loaded so once the weight goes on it they retract and the ramp sits down on the non moveable parts, like a jacking beam does on a 4 post lift
https://www.youtube.com/watch?v=y3Y-JTI3gzs