This case works very well for my Touch Pro.
Belkin Neoprene Sport Case for iPod
http://www.expansys-usa.com/p.aspx?i=131564
Using this case, I mounted the phone on my dashboard and it looks great. Only issue I have is the size of the Audio adapter when a 3.5mm plug and the USB car charger is plugged into it, its just too bulky and ugly for my dashboard. I'd like to find a way to run all this behind my dash, but I need an extension cable that accepts the annoying HTC mini-usb wire and allows me to extend that wire and bend the wire so I can hide it behind my dash.
Any suggestions?