If you want to drive something dependable and long-lasting, steer clear of these vehicles. With a 22% improvement in sales last month, and despite the six-month, $4.3 billion loss it announced Wednesday, General Motors is likely to have its strongest spring and summer in years. Plus, the automaker had critically acclaimed new products at the recent New York Auto Show and the much-anticipated Chevrolet Volt is due out this fall. More from Forbes.com: • In Depth: Worst-Made Cars On The Road • Navigating Your Way Through Traffic • Cars With the Best Gas Mileage Year-over-year sales of GM's Cadillac division...