Unfortunately, I think the "Four Corners of Michigan" could be a bit much for us right now. Even eliminating the Upper Peninsula, we'd be talking a route of well over 1,000 miles, and a good portion of it wouldn't really be worth seeing. LOL!
HOWEVER, this past weekend Lisalou and I made a 425 mile, three-day ride from here (outside Detroit) to Grand Rapids (home to some of the best brewpubs in the midwest), Hickory Corners (home of the wonderful Gilmore Car Museum), Kalamazoo (home to possibly the BEST brewery in Michigan, Bell's Brewing), and back home. It was a fabulous ride, and we saw parts of the state that were quite new to us, including beautiful farmland in the mid-section.
If I erred in my navigation plans at all, it might have been to focus too much on scenery and not enough on efficiency. Instead of taking the standard two-line state highways, we spent a lot of time on the county roads which, while scenic, tended to be a little rough and added extra miles. If I were to do this again, I'd stir in a few more state highways and a fewer farm roads. Our final day, which covered about 200 miles, was pretty exhausting. The toughest part, unfortunately, was the last 45 minutes, as we neared the city and had to deal with heavier traffic and congestion to get home.
Of course, we were riding the 125 cc Buddys, not mopeds.
I'd do it again in a second. 'Twas glorious!
...Operating with impunity in the legal gray area between bicycles and motorcycles....