To be honest, I liked the 1/56 scale Puma kit from Italeri (made for Warlord Games). Yes, I too thought that the hollow wheels were a bit strange and not something Italeri normally does to their kits, but overall, I think it is a good little kit for gamers and modelers if you look past that weird aspect about the wheels being hollow. However, as ultravanillasmurf pointed out, if its an issue, it can be filled.
What I can't wait to see is the release of the Sdkfz 222 armored car by Rubicon models. I need a few to replace the resin ones I have in my collection.