Agreed, especially from La Crosse to Prescott.Even if you are not camping, there are plenty nature activities in Door County. That is the "thumb" of WI (if you hold your left hand up.)
Check out this site, http://www.travelwisconsin.com/ Even though Wisconsin is not a "big" state. But it has lots of small towns that have activities and such. It is like Finger Lakes region in NY. I loved that part, though we don't have big hills like they do. There is lots of places to see along the Mississippi River on the far west of WI on Hwy 35. If the weather is nice, it makes a good drive.
Anyone know where the New Glarus brewery is? is it nearby? They've got some killer sours.