Well here is something you might be able to help with.
I have a 30x30 metal structure on a poured kevlar fiber reinforced 3 inch concrete slab.
For whatever reason, they didn't pour a ramp in for the entrance (I've never pulled a car into the shop) Do they make anything that I can just bolt into the floor that'll give me a clean ramp to get a car in? There is a 3-4 inch lip on the garage door and my driveway is gravel so there is no way I can get my lowered car up over that.