Reno and Carson City are on the northern end of Nevada. Las Vegas is on the southern or opposite end of the state. Pahrump is one hour outside of Las Vegas. There is only one highway that goes from one end of the state to the other.
Up to 2012, there was no Greyhound bus line that would go from one end of the state to the other. Meaning if you wanted to go from Las Vegas to Reno before 2012, and didn't have a car you were just out of luck. Take a look at a Nevada map to see what I mean by how the state is laid out.