Speed limit is mostly 75-80mph on I-80 between SLC and Battle Mountain. I usually don't go over 5mph above the speed limit and I've never had any problems. There are rest areas along I-80 too, if you need to make a pit stop. The drive itself is pretty scenic, especially for those of us who aren't from areas with mountains, etc ...LOL. I haven't had time to do much sightseeing, so others may be able to provide more info.
Wendover is about the half way point between SLC/Elko and there are a few hotel/casinos, gas stations, restaurants, etc. just off the highway. The Peppermill has a presence there too. It's usually one of my pit stop along the way to/from Elko.