The Calty (Toyota's California design studio) designed Scion t2B looks like the natural replacement for the boxy xB. The t2B appears to address the two primary criticisms of the xB: frumpy styling, and a weak powertrain. Although the t2B doesn't completely abandon the angular styling motif of the xB, it presents a sleeker profile, with some design cues from the tC coupe. The 2.4L powerplant is a definite upgrade from the underwhelming 1.5L engine in the xB. Huge 20-inch alloy wheels house 14-inch brakes. Dual glass fixed moonroofs improve exterior visibility. Innovative features include a rear backlight that doubles as a projector screen for movies or games. Rear-opening suicide doors on the driver's side allow easy access to the interior. The passenger side features a sliding rear door. Speakers are integrated into the rear doors and allow the t2B to function as a mobile entertainment center.