The auto industry is about to go on a hiring spree as carmakers and parts suppliers race to find engineers, technicians, and factory workers to build the next generation of vehicles.

The new employees will be part of a larger, busier workforce. From coast to coast, the industry is in top gear. Factories are operating at about 95 percent of capacity, and many are already running three shifts. As a result, some auto and parts companies are doing something they've been reluctant to consider since the recession: Adding floor space and spending millions of dollars on new equipment.