For straightforward, joyful motoring in the open air, few cars can match the pure spirit of the great roadster of all time, the Mazda Miata MX-5, now in its fourth generation. This is my personal favorite Miata since the first-gen, a car that I owned and took on several road trips.
Yes, your luggage will be limited. But you wanted to travel light anyway. And yes, you'll be limited to one passenger. But didn't you want only the best company?