Chrysler's cute Crossfire coupe got off to a slow start in the U.S., but sales have picked up since DaimlerChrysler got real on the pricing and started incentivizing, to use the current jargon. It now outsells the Porsche Boxster and Audi TT combined, Chrysler execs are proud to point out. A convertible will no doubt help the car's appeal, as will the very sporty SRT-6 version that goes on sale this summer. The SRT-6, which is available as a coupe and roadster for - deep breath - $45,695 and $49,795 respectively, is billed as Chrysler's fastest ever car, with a top speed of 158 mph. It is also, as you can see from the dollar numbers, Chrysler's most expensive car ever.