Miller's Rest Area, 10 miles west of Tonopah on US-6 has a separate lot for overnight RV stays. There is an 18-hour limit, and they have fresh water and a dump. No trucker's are allowed in this rest area -- they must park across the street and walk over if they want to use the rest rooms (flush toilets). It's a nice, quiet place to spend the night, and has a great view of the Sierra Nevada's.