2011 McLaren MP4-12C, Mercedes-Benz SLS AMG, Fisker Karma, ...

After several years of speculation, McLaren finally takes the MP4-12C public, Mercedes-Benz brings out the SLS AMG ahead of Frankfurt, Fisker announces the MPG of its Karma plug-in hybrid, and we hit the streets to find out the stories behind your first car. Hosted by Derek DeAngelis.