After driving cross country twice in my '95 w/o cruise, I splurged and put the Snake-Oyl unit on my '00 before driving to the OK/TX area for the third time for VOI8.
However, mine did NOT work reliability, inconsistantly. If I could get it to set, it worked beautifully; locking onto speed very tightly even in sixth gear (one forgets that sixth gear has more acceleration at highway speeds than most other cars' 2nd gear
). However, in my case, getting it to lock on was the hardest issue. I drove most of the way between San Jose, CA to/from Dallas TX the way I'd already done it twice before - the old tense foot method. Now, that was no real problem, but it did burn me that I spent a bit shy of $500 for this thing and it wouldn't work. The symptoms seemed to point to a bad transmitter, and, each time I replaced the battery in the steering-wheel-mounted transmitter, it worked for a short while, then wouldn't work. On the way back from TX, even that method quit working.
Since Snake Oyl had a booth at VOI8, I stopped by while I was there and spoke to one of the guys, and got no/zero/zilch/nada interest in my problem, and pretty much a blank look.
Well, short story long, I finally figured out the problem this last summer when I took the time to debug it - after standing on my head in the driver's footwell to run the debugging tests, I found that the steering-wheel-mounted transmitter wasn't working, as I suspected. When I took the transmitter apart, I found that the contacts for the battery were not soldered on correctly and one was loose, and both had the classic look of a "cold" solder joint. All it took to fix was re-soldering the contacts.
And, to be fair, I never called Snake Oyl's tech help line, so I'm not sure if they'd be of any help or not. It is six-wire splice installation into the main wiring harness which I performed myself. I'm not inexperienced with installing electrical equipment into vehicles, but I didn't really feel like spending the time to convince a person on a tech support line a year later that I did it correctly.
End result: I recommend it. It does indeed work beautifully. If your unit ever acts flaky like mine, check the solder integrity of the battery connectors in the transmitter unit.