BLOOMBERG BUSINESSWEEK — Honda Motor Corp.’s campaign for its new CR-Z car features the hybrid vehicle in some colorful roadside billboards that can’t be seen from a freeway. The ads are on display in Facebook Inc.’s virtual game "Car Town," as Honda advertises on the social-network site for the first time today. The game, which allows users to collect and customize cars, has 3.1 million users. It was released on Facebook two weeks ago by Cie Games Inc. Brands are turning to social networks to reach an audience with leisure time on its hands and the patience to sit through branded messages. Walt Disney Co., Electronic Arts Inc. and Google Inc. have all bought games makers in recent months to benefit from millions of users signing up to play...