I agree, the quality is not good during the day, but it's worthless at night (or even in parking garages if not well lit). The light might help at least to be useful at night, not good, but somewhat useful.

It's pathetic. The camera in my $54k FX45 worked very well, day and night, and my 74k E70 works like garbage. Nighttime is when the camera was most useful in that car.