Place it at the very start of a Baldi edit, before any gameplay or driving footage, so it sets up the joke for everything that follows. Let the next scene answer it, then follow that payoff with the funny laugh to close the bit.
About this sound
Baldi performs a cheerful, off-key rendition of Driving in My Car in this fan-made singing clip, with his flat, teacher-like voice carrying the familiar tune. It feels goofy and unexpectedly catchy, like a classroom character suddenly turning into a road-trip singer. The playful mismatch between the stern character and the light song makes it funny rather than polished.