the other car is like the ghost, it keeps moving, so u cant
capture it at all, only the trails of lights it leaves behind. long
shutter = more light captured = brighter effect. low aperture (low
f-stop eg. F2.8 ) = bigger lens opening = more light captured =
brighter effect. so if u combine long shutter speed and low
aperture, chances are yr pic will go very bright or totally
overexposed.