Elmo and Taye Diggs use their imaginations to go for a drive. They imagine an automobile with a horn that beeps and seat belts to keep them safe during their ride! [2:52]

Are you a late merger? You might be on to something. Ira speaks with Tom Vanderbilt, author of 'Traffic: Why We Drive the Way We Do (and What It Says About Us)' about the psychology and engineering found where the rubber meets the road.