This little gem rolls around patio/deck easily and is sturdy enough for the Baby Q and a large propane bottle. It also holds bbq tools on its pegs. I'm very glad I ordered the cart with the Baby Q.

I've had this cart for a little over three years now, and it's aged wonderfully. It's a great cart for transporting the Q grills, which are intended to be mobile-friendly. As far as I can see it, there are only two downsides.
-placement of the grill on the cart can be slightly tricky, really only an issue in the dark.
-bottom rack is more for stability, light-weight items. It is obviously not meant to have a full, standard sized propane tank on it.
Other than that, it's great. Excellent for small spaces and apartments. It is folds for storage and travel, but can stand up to the wet-cold-icy winters well. Get this with one of the covers and you can leave it out all year long in most cases. I'd recommend removing the gas line off season though, as my first was chewed through by raccoons!

Weber 41429 Rolling Cart for Weber Q and Baby Q Grills Very nice cart. Fit our grill perfect. Weber is top quality.

I bought this to go along with a Baby Q I had given my college-aged daughter and she loves it - easy set up, easy to move around, and easy breakdown. She also said the storage underneath is large enough for a small cooler.

Because it's portable it obviously is not going to be as sturdy as a permanent stand, however, I am pleased with its stability. It surely is not going to stand up to abuse, yet if treated with reasonable care it should hold up for a few years or more.