A Buick Anthem / Envision prototype was recently spied during cold weather testing somewhere in the mountains in the United States. So far, Buick, having a choice between Anthem and Envision, has not decided what name to give it, yet. The Buick Anthem SUV is meant to fall between the Encore and Enclave in the company's mode line-up. According to various sources, the Buick Anthem is going to be powered by a 2.5-liter engine with an output of 196 bhp or a 2.0-liter turbocharged unit with 259 hp.