Lexus adds a much needed convertible to its lineup with the 2010 Lexus IS 350 C. As the name suggests, it is based on the IS 350 sedan, Lexus' smallest and most affordable car. But a low price doesn't mean a shortage of luxury; the cabin uses high-quality materials, with excellent fit and finish. Although the IS 350 C feels like a sports car initially, handling doesn't hold up when inertial forces try to drag it off the road. Steering gets vague and the car doesn't hold its line. But cabin tech is newly updated, even beyond what we've seen in the IS 350 sedan, with traffic and weather integrated into the navigation system, iPod integration, and an impressive Bluetooth phone system.