PIC
really like the look of this, do you have them fastened to the floor to stop them slipping? Wood on concrete is quite slippy.
When I get my garage I will do something like this I think
No need to fasten them to the floor for driving the front wheels on to them.
I've even driven up (carefully) using the driven wheels and there was no slippage, though perhaps fastening them down for this would be better.