New garage-floor covering....

If you work in the garage,, isn't it harder to slid under the car with the sand grit in the paint? Like a bare concrete floor would be? Don't have a lift.
How would you prep an already painted floor that needs redoing? I used an epoxy coating with no sand or flakes 20 years ago and it's mega chipped now after the restoration and other stuff.
Larry

Not sure about the prep and re-application, as far as sliding under a car, it's not a big deal. The sand is tiny and there isn't a whole lot of it, at least how I applied it. I don't use a creeper much either though, so take it for what it's worth.