IMHO, not really. It's got a good chunk of milage. But I'm ALWAYS suspect of Craigslist adds, specially when they dont list a name or number.
Simple enough to find out. Just email the anon email address with specific questions. If you get some reply that's very generic and anywhere contains "I will require a deposit" or "the car is out of state right now" etc... tell him to fawk awf.
If the dood says "here's my number, call me to check it out". Do it.