There were new twists on foldable devices, cars that changed colors and smart ovens that live streamed dinners. Patrick T. Fallon/AFP/Getty ImagesBMW unveiled a wild color-changing concept car with 260 e-panels that can change up to 32 colors. During a demo, different parts of the car, including the wheel covers, flashed in varying hues and swirls of colors. A new look for foldable phonesSamsung's Flex Hybrid Display concept folds and slides SamsungSome companies offered a new twist on the foldable phone concept. The lock, which will cost $300, will be available for purchase late this spring, according to a company press release.

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