I actually did my 2 dream road-trips in the past 2 years:

1: Drove across Ireland from Dublin to the Cliffs of Moher and back to Cork via the Ring of Kerry. The views and the nature were simply amazing, not to mention the many pubs along the way.

2: Rented a Mustang and drove the Highway 1 from San Francisco to LA through to Las Vegas in 8 days. Saw most of the highlights possible in the short period of time, but I would love to go back and check-out all the national parks more!

Drove the first one with friends and the second one with my father, and both trips were absolutely amazing!