Merc-ed out, I'm a baby boomer wanting sunshine, fun and change. I thought a Mercedes CLA sedan would do the trick but after my 190E, C180 and C220, I want a change. But a lot of the little fun machines from Europe, like Skoda Fabia, and Ford Mustang from the US, have no opening sunroof. With the world's love affair with alfresco dining, you'd think the brains in car-making would figure: "It's the fresh air they want, stupid." I'm looking at Fiat's 500C and Mazda's MX-5 and praying the big trucks won't tailgate me.