The mid-size Lexus GS was refreshed and reinvigorated in the 2013 model year, and it returns as the Lexus GS 350 and GS 450h hybrid again for 2014, ready to take on the likes of the Mercedes-Benz E Class, BMW 5-Series, Audi A6, and Cadillac CTS yet again. The GS has usually been an also-ran in that category, but it's made substantial...