BMW unveiled a wild new concept at this year's big tech trade show: A color-changing car. Drivers can change the color of the car at the touch of a button, instantly, the automaker said.

Any BMW M3 is a special car, even if you go for the most basic model without options – any spirited driver would love to own one, regardless of doors, color and specs. However, M3Post member ...

At CES, BMW unveiled the iX Flow featuring E Ink, a concept which would allow owners to change the exterior color of their car by pressing a button.