In reply to ThunderCat:
Merck (edit; pretty sure it was Merck) produced a thermochromic car paint about 25 years ago. The streamlines visible on the bonnet of a car being thrashed round a track were very cool. Regulators wouldn’t entertain the idea for a moment, any more than they will ePaper bodywork.
Is now a good time to rant about ******* animated indicators on new models?
Post edited at 22:00