Electric vehicles have excess heat to dump, so that might not be a problem. Or they could use catalytic heaters, been sold for decades.
Remember when florescent tubes first came out? They had a warm up period before they actually lit off. Only later versions became, more or less, "instant on." Maybe there are a few more advances left in CFLs. But I kinda doubt it. I believe LEDs, then, fairly rapidly (maybe 10 years from now), OLEDs will dominate the market. The potential for cheap OLED lighting and displays is just too great.