Got tired of having to wrestle this around when I wanted to work on it or just needed some elbow room w/the car,so I built a wooden pallet w/wheels that inserts up into the base.
My first design had thin plywood w/plastic wheels that all blew apart the minute I got them under the pump...oops!
I realized since I put the guts in,it now weighs 100's of lbs. more then I figured,so I married two 1-1/2" planks & upgraded to 500 lb. steel wheels w/4"lag bolts and all is well.
As nimble as a Zamboni..
Sits 3" higher but as sturdy as ever.