First Drive: 2011 Buick LaCrosse CX gets four cylinders for fuel economy

For the foreseeable future, the LaCrosse will remain the flagship of the Buick lineup, so at first glance, it might seem peculiar that General Motors is adding a seemingly modest inline-four cylinder engine to the sedan’s powertrain list. However, at the time the LaCrosse was being developed in 2007-2008, gasoline prices in the United States had spiked to their highest levels ever, topping $4 per