That’s the “pilot light”
It’s apparently named after someone from the Bible. See, that guy is dead now. When that light comes on it means you will be dead soon too if you don’t get away from the car.
I have been told that furnaces, boilers, and certain grills also have these lights, but that doesn’t really make sense to me.
Complete control over time. I can stop, start, speed up, slow down, skip forward, skip back, and rewind.