If you want to add four wheels to your already-expensive Mac Pro, then they’ll cost you almost $100 apiece. Not that you can even buy them separately. You have to specify the $400 option when you buy. The wheels are a part of the Mac Pro’s steel frame, so there’s no way to add them after purchase.
Or is there? We found five good options to let you wheel your Mac Pro around the office, or to perhaps grab the power cable and take the new computer out for a walk like a dog. Or even to sit on the thing and take it for a spin, go-kart-style, down the nearest hill.