I just got the Rush Hour expansion pack for Sim City 4 and wanted to give my impressions. First let me tell you that I am running it on my Powerbook G4 1.25 GHZ 64mb VRAM. At medium graphics settings, it has been running great. In fact it seems to be running faster and better than on my PC. I have access to a 2.4GHZ 128mb VRAM computer and it is very sluggish when saving cities and scrolling. My Mac so far has been much faster with saving and loading. This makes me very happy. The really good news is that Rush Hour for Mac has been able to use about 95% of my custom lots and BATs downloaded off places like Simtropolis. It even supports many of the mods to the game itself. I imagine on a top of the line G5 this game will really fly. I definitely recommend this game!