all right let's get down to business with cnbc's landon dowdy. good morning to you, landon. >> hi there, shannon. good morning to you, as well. the consumer electronics show is the place to unveil all kinds of new devices, including even a smart bra. the bra is designed to measure a woman's biometrics such as heartrate and steps through a piece of clothing they wear every day. the bra could be in stores this spring for about 150 bucks. general motors teams up with lyft to create a fleet of driverless cars. gm is investing $500 million in lyft, and they're also rolling out a new service for human lyft drivers to rent gm vehicles instead of using their own. and a burger king is raising the stakes in the fast food wars. the chain will start selling a five-item meal today for $4 with a bacon cheeseburger, small