Well, guess they been makin' more than license plates.
3 seconds sound clip from the Darkwing Duck - Darkly Dawns the Duck: Part 1 (S01E01) movie soundboard.
You can hear this line at 00:21:36.528 in the DVD version of the TV Series.
Quote context
[...]
- Clovis, if the Ramrod is secured, I think it's time we said goodbye to the warden.
- Oh, I've got to run. Tsk, tsk, tsk. It's time for my afternoon gloat over Taurus Bulba.
- Well, guess they been makin' more than license plates.
- It's a shame to lose a hideout as perfect as a prison, but all things must come to an end.
- Time off for good behavior, indeed.
- It's time I met this Darkwing Duck.
[...]