It used to be said that a 1farad capacitor would be impossible, if not it would be EXTREMELY large...
Well, we all know you can buy 1, and 1.5 farad caps for car audio. They are big, but not huge.
And, I have seen a capacitor device for car audio that is 40 farads. It consists of many smaller caps in a housing about the size of a good size amplifier.