People who like road trips love Kansas. The roads there are in impeccable condition. Fewer than one percent of all the roads in the whole state are considered to be unfit for purpose, which is below the next-best figure by a large margin.
Perhaps the roads are so steady and safe because they're so flat. Sorry, Kansas, but you're the least interesting state in the USA to look at. There are no peaks and troughs, and one end of the state looks exactly like the other.