Millions Hit the Road and Skies for Christmas Eve Travel | How Proposed Honda-Nissan Merger Could Impact Car Buyers | Starbucks Strike Grows

With a record number of travelers expected this Christmas Eve, airports and highways will be packed despite forecasts of challenging weather in the Northeast and West Coast. TSA expects nearly 40 million passengers this holiday season, while gas prices remain lower than last year.Starbucks baristas in 12 cities are on strike, demanding higher wages and better working conditions.The walkouts come just days before Christmas, with workers speaking out against the company's proposed pay increases as inadequate.As Honda and Nissan move toward a potential merger, the auto industry's shift away from gas-powered vehicles could significantly impact your next car purchase. CBS News' Kelly O'Grady explains what this merger could mean for consumers.Waymo presents a first look at its fully autonomous car operating at higher speeds on a Phoenix freeway, as the company faces growing safety concerns and skepticism about driverless technology. Kris Van Cleave reports on the future of autonomous vehicles.CBS News' Chris Livesay visited St. Peter's Basilica at the Vatican to see the newly restored historical features. These features are now fully visible for the first time in generations as part of major preservation efforts in Rome."Club Cardio" is a unique workout that blends hip-hop and step aerobics. The class has gone viral with millions of views on social media, and gained celebrity fans like Ciara. Michelle Miller has more on how the family-run business is transforming fitness.