We've done some driving trips the last few years. 2014 a week around different parts of Wisconsin, the previous year a 17 day driving trip to Glacier National Park and the Grand Tetons, the year before that a 17 day driving trip to southern Utah, the Grand Canyon, Arizona and Las Vegas.
I plan on retiring at the end of January 2018. At that point we'd like to do a three month driving trip - just head west from Minnesota with no set destination. Then we want to go back to Europe for a three month trip (we haven't been there since December of 2008, when we visited the Christkindlmarkts in a number of German towns.)
So we might get to Vegas a couple times a year, but if not, there's a lot of other places we want to visit.