This is a nice article about scenic drives from the W S J.

...where to go when you want to take in some scenery, play hooky, or do something more ambitious with your driving machine than push the speed limit in the E-Z Pass toll lane? ... Car companies make a business out of finding scenic and engaging roads to show off their new models to the motoring press. They send scouts to find back roads and byways with the right blend of fast and straight, twisty and scenic to impress...
http://online.wsj.com/article_email/...leTabs=article

The link to the article should be good for seven days. There are some other routes shown in the comments to the article.