celebrity wallpapers: new audi car wallpaper

Monday, November 14, 2011

new audi car wallpaper

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Open cars may have a folding roof but only detachable sidescreens which snap-on, they do not convert into a fully enclosed car with proper weather-protection. The wind-up windows make the distinction between an open car and an all-weather car now known as a convertible.

Convertibles are a luxury because they are more expensive to build than closed cars, the matching sedans or saloons. Open cars were significantly cheaper to build and very much lighter than sedans, saloons or convertibles and usually very flexible.

Contemporary convertibles are known and marketed under several different terms due to the convergence of body styles over the years. A convertible may be described as a drop-head coupé, a cabriolet or cabrio, an open 2-seater without wind-up windows as a spyder, or spider or roadster. Retractable rigid roof (or hard-top) cars are marketed as simply retractable hardtop and French versions as coupé cabriolet or coupé convertible.

Convertibles such as both the first and eleventh generation of the Ford Thunderbird and the second and third generations of the Mercedes SL featured as standard or optional equipment fully rigid, manually installable hardtops — later examples including heatable rear windows. These hardtops provided acoustic insulation but also required space-consuming off-season storage — and a cumbersome two-person installation. The optional aluminum (i.e., lightweight) detachable hardtop for a Porsche Boxster weighed 51 lb (23 kg). Two current-day examples of vehicles with a detachable hardtop available are the Jeep Wrangler, and the Mazda MX-5.