You can't exactly say that the Viper has a no-nonsense look about it. Every one of its plastic panels has been formed to catch the eyes of customers and passersby alike. It's curvaceous and exciting, from a giant front-air inlet to side exhausts (which will burn legs that wander too close) to a wide, flat tail. Swoopy looks, though, don't translate into aerodynamic efficiency; with a 0.55 drag coefficient, the Viper is about as slick as a brick wall on wheels.
Ordinarily, that would lead to a discussion about wind noise and fuel economy. There's plenty of the former (the Viper is an open car, after all), and more of the latter than you might expect, though it's the big, lazy engine and long gear ratios that make the Viper surprisingly fuel efficient on the highway.