Top-ranked analyst Toni Sacconaghi on Apple getting into self-driving cars

The world's most valuable company is getting even bigger. Apple's stock is extending its big run this week on a report that it's hoping to start producing a passenger vehicle by 2024. Tim Higgins, reporter at the Wall Street Journal, and Toni Sacconaghi, Bernstein senior research analyst, join "Squawk Box" to discuss.