Here is a spam email I got in response to my MR2 ad on Craig's list. Is everyone getting these.
Original Message ----- Hi, would you come down on the asking price? Do you know the approximate mileage? Are there any problems with the engine?
I wrote back: What type of racing were you planning to do?
Spammer Replied ----- Awesome, that's perfect. My fiancee Jason is the one paying for it. We agreed that he buys the car for me, if I cover the cost of the policy. I can definitely afford it, but he still wants me to show him a basic estimate of the cost before he buys it for me.
I'm at the office, and they allow internet use to corporate sites only. Would you do me a favor, and go to "website those feckers tried to trick me into visiting" and just...............
End Spam.
Here is my MR2 ad.
http://tampa.craigslist.org/hil/cto/3044253727.html
Not that particular one, but I can be guaranteed of a few spam type mails within moments of placing a listing. The "what is your bottom line" spam, the "let me overpay you and please ship it here" spam, etc.
SVreX
UltimaDork
6/1/12 7:20 a.m.
That's weird.
When would that response work? It's too specific to fit as a response to most things you might have said.
Gotta slap your hand though- As a brother automotive addict and/or enabler, you should have posted it here first! 
Good luck with the sale.
I got almost the exact same one yesterday. The weird thing is is started out sounding legit. "I'm interested in the Volvo, I have one like it and would like another. I'm in Mt. Vernon." I figured it was real since they mentioned a semi-local town.
The next reply to my response was from a different name and email "are you willing to budge on the price?" I replied yes and got the same response about the insurance from yet a different name and email.
Then I deleted it.
I likes the car, and if you were closer you'd be $300 richer.
I got even more spam, so I am now in the habbit of answering initial emails with a question about how they plan to use the MR2. That should let me know if it's a real buyer. Seems to be working well so far. At a price of $300 I may need to be careful about scrap guys.
The spammers (really scammers) are getting so sophisticated that it is becoming very hard to sort the legitimate buyers from the scumbags.
I sold a motorcycle on Craigslist recently, and I swear 75% of the email I got was spam. My idiot BIL put his phone number in a Craigslist ad and got scam calls from around the country.