Guess I've seen a fair chunk of the US, even if a fair few of these are states I just drove through .... in several cases, drove through without even stopping for fuel. My 1970 SS350 Camaro had about a 19-gallon tank, iirc, and could go over 400 miles between fuel stops as long as I stayed below about Stench 0.5 or so. (And I still remember climbing the eastern side of the Continental Divide at about 100mph, with the car loaded to the gills, on about two-thirds throttle.)
create your own visited states map or write about it on the open travel guide