BMW has introduced the iX Flow concept equipped with technology that BMW has been developing for many years. It is a concept that uses E Ink technology that allows it to change body color.
The car is wrapped in foil containing millions of E Ink microcapsules. Each capsule is filled with negatively charged white pigments and positively charged black pigments. The electric field causes white or black pigments to accumulate on the surface of the microcapsules.
BMW points out that changing the color of the car can help warm up or cool the interior of the car depending on the season. Changing the color from gray to white may not seem like a big achievement, but it is very useful. The reflection of the sun’s rays during the summer with the white color of the exterior helps with cooling, while the absorption of heat in the winter with the gray color of the body reduces the need for heating.
Whether this technology will really be used in mass-produced cars remains to be seen.
Source: BMW