Lights that actually light up the worldf

Yes, we need lights, not tiny lights that doesn't light up the surrounding area, we need one that does. I've seen it implemented in other Unity games, so it must possible right?
Few possible implementations of this are:
Headlights
Cab lights
Landing lights
and just lights in general lol

Idea by Ryn176, I just made uservoice because he didn't have enough votes to do so