Mike Sussman is one of the buyers helping General Motors come back in the small-car business. The 45-year-old systems analyst just traded in a Toyota Prius for a Chevrolet Cruze, seeking both high mileage and more pep. \"I was very, very leery about buying US, to be honest,\" said Sussman. \"They got me with the mileage. \"It actually drives like a regular car. With a Prius, you always feel like you\'re driving a science experiment. It just doesn\'t have a lot of guts.\"