Quote Originally Posted by WhereRWe?
When in doubt, try eBay!

I found many entries for Zire 72 car charger, such as this one:

http://cgi.ebay.com/ws/eBayISAPI.dll...768835602&rd=1
I have one of those and it is just what it says. It is a charger. If you leave the the PDA on while the charger is plugged in it will not charge fast enough to keep the PDA fully charged. I used it this weekend and left the PDA plugged in with the charger while I was caching and my battery went down to 75% after about 4 hours of caching.