Mercedes-Benz USA has a testimonial video from a Google executive who was one of the first American customers to avoid a real-life collision because his car stopped without him even noticing the car ahead.

FORBES: Cars That Can Drive Themselves Are Still A Ways Off; Cars That Can Stop Themselves Are Already On Sale

For Imerman, mentoring patients has helped him to live in the moment and embrace life without fearing a recurrence of cancer.

CNN: Pairing 'angels' with cancer patients

Marshall's ability to camouflage without disturbing the band's dynamic also allowed him to experience the touring life of the Rolling Stones, Davis said.

CNN: STORY HIGHLIGHTS