Mazda's Miata RF is a Porsche Targa on a budget, and that's perfect

Mazda's fourth-generation MX-5 Miata might be the lightweight droptop for purists, but it's the Miata RF that will satisfy the mass market hunting biggest bang-for-buck. The slick fastback style and mechanized roof give the classic roadster a brand new twist, not to mention a degree of Porsche Targa-esque theater, that's likely to appeal to drivers who might want luxury coupe …