I have nothing, and as much as I'd like a scangauge, I only drive my car 3-5k miles a year. $170 is a lot of money for something to help save on gas when my car doesn't go that far. I'm a little worried that new cars will come up with some new output and make the scangauge useless, but I guess that would only affect me if I bought a brand new car.
I do drive a Chevy Venture 11k miles a year, but gas on that is free (it's used as a shuttle bus type of thing) and it's too dangerous to shift that vehicle into N often because it slips into R way too easy. Also, with a bunch of other people in it, they may not appreciate any noticeable hypermiling techniques! I guess since I don't own it I don't feel comfortable putting the vehicle at risk.
I haven't seen any used SCII online, and it seems anyone here is hooked and isn't selling them.
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