My sister uses those mats in her horse stalls up in WA and says they are durable as hell. Never thought of them in a garage. Just wonder how dense it is and if the caster wheels will want to dig in. Maybe buy one piece and put it to the test?
I am waiting for permits to build my new 1,000 s.f. garage and looking at all floor options as well. I will be going with either polished concrete or terrazzo. With the terrazo, I can cove it up the walls about 6" and have a floor that I could literally steam clean if I ever needed to.

