Well I still have a few panels out, no back seat or belts, no trunk carpeting. I manage to drive around daily with no problems and even if I have to have passengers they still ride back there. I'm gonna do something with it one day, but I don't mind my car weighing less 24/7. I can also hear the subs better with no seat. Different strokes for different folks.
Oo and my car would run low 17s or high 16s in 1/4 mile if you were referring to my car.