Ebay, Craigslist, Amazon.com -- all viable options depending on your preferences.
You can be stupid and get scammed on any of them. I tend to prefer CL, the lowballers and scam attempts don't bother me, all I need is the one person willing to do the deal.
For CL, use Google voice and never meet at your home or theirs; that's just begging for problems. Same thing for parking lots or something like a mall food court. Far too easy to get hit with a snatch&grab. Bad idea.
At least meeting INSIDE a Starbucks, during daylight and away from the door, there are more people around and you can much more easily see if someone's hanging around the parking lot to potentially roll you after the sale. Ideally get there well ahead of when you're meeting the person so they do not know what you drove (lessens risk of an ambush) and also allows you to choose a spot away from the door and with good visibility.
Another idea is to meet in the lobby of a police station; any buyer unwilling to meet you there is probably not someone you want to meet... 🙂