CNET News Video: Green Mile: A look inside tomorrow's catalytic converter
CNET News Video: Green Mile: A look inside tomorrow's catalytic converter3:10 /
The catalytic converter is the unseen, unsung hero of auto emissions control. Does the old "soot can" have a high-tech story? Check out what CNET's Brian Cooley and Michael Kanellos learned from visiting Nanostellar, a company that replaces particles in a catalytic converter so a car can run greener.