When I was looking at 4Runners on CL last year it was a lot of the same. About 2/3's were complete flakes or didn't respond. The other 1/3 were writing descriptions for some other mythical 4Runner and not the one they were selling.
Sounds like Business as usual on C/L. Trying to sell a set of Bose 301 Series III speakers and got the "Hey man your check is on the way I'll have a local guy pick them up". Sure. Emailed the jackwagon told him to have his "friend" bring cash. Shockingly, received no response.
I guess people (sellers) really are dumb enough or just that naive to think this will turn out well for them. As soon as the scammer gets their grubby hands on your stuff, you find out their "certified" check is worth whatever it was printed on. Sad.