Vehicle tech takes centre stage at CES

The BMW iX Flow concept car (BMW)

BMW has unveiled a new feature that can change the exterior colour of a car with the press of a button, using the E Ink technology best known for being used in the Kindle e-reader.

Shown during the CES technology convention in Las Vegas as part of a concept version of the BMW iX, the car is able to switch between white and black finishes at any time.