The XKR-S is the most powerful production car ever built by Jaguar, squeezing out 550 hp from its 5.0-liter V8. The Jaguar XKR-S convertible will thus become the most powerful production Jaaaaaag convertible when it debuts at next week's L.A. Auto Show. »11/10/11 10:00am 11/10/11 10:00am
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