Behind the Wheel with Phil Lebeau

Barra broke glass ceiling, but real challenge is ahead

General Motors CEO Mary Barra
Andrew Harrer | Bloomberg | Getty Images

Mary Barra, the incoming CEO of General Motors, is trying to pull off one of the trickier moves in the business world.

No, it's not becoming the first woman to lead a major automaker—that achievement should be heralded for all it represents, but her gender will not determine if she's successful in her new role.

Instead, the measurement of her success relies on whether she can evolve the automaker to become even more competitive, profitable and perhaps live up to its potential.