Until I started cutting holes in this one (not the card table, the one I wrote the tutorial for) I think you might have been able to park a truck on this one too. It's about 80 - 100 lbs. The wheels are held on via a plate that's screwed into the sides with 18 screws per plate, plus the posts for the wheels.
DH hauls freight for a living, and I asked him how much he though it weighed. I said I thought 80, he said probably closer to 100 before we started cutting. So I said, "so... I shouldn't have flipped it up on its wheels from its back when I picked it up?" He sighed and reminded me of my impromptu chiropractor appointment I'd had to make later that week. Oops.