GM CEO Mary Barra: 'I am deeply sorry'

Newly-minted General Motors CEO Mary Barra was in the hot seat on Capitol Hill Tuesday over deaths caused by faulty ignitions.

Members of Congress wanted to know why the automaker ignored warning signs of a faulty ignition switch that led to the death of 13 people. It took GM 10 years to recall the defected cars.

Some say GM turned down potential fixes because it was too expensive. But documents provided by the auto giant show the piece needed to fix a defective ignition would have cost just 57 cents.

One woman who lost her son just nine days after he bought a GM car says the company just cares about their bottom line, not those who lost their lives.

"I want justice," says Cherie Sharkey, mother of a GM crash victim. "He died at the scene. They will never be able to give me my son back."

CNN's Dana Bash reports on what happened at today's hearing.