In between deflecting questions about runaway Camrys and Priuses that don’t stop, Toyota found time at the Chicago auto show to unveil the 2011 Avalon, which goes on sale this spring. In truth, there's a lot of old Avalon here; the sheetmetal and interior are new, but the running gear and platform are the same. The new car features the same 3.5-liter V-6 engine that makes 268 hp, mated to a