Took our 30' RV through, got a great wash at a great price (Mention Yelp, Google, or Nanapages for a discount).
The location is easily accessible from the interstate and the quality and speed of service was impressive. I've sat for an hour or more waiting for a wash, no such problem here.
They also have an undercarriage wash, which came in VERY handy after driving through the midwest in the snow.
I'm always of the opinion that there aren't enough options for RVs to get washed out there and I'm glad to find a good provider close to home.