OMG the Fiat Uno Rap ! I remember the TV adverts from the time. I was on holidays in Italy with my parents in the summer of 1991 and that stupid advert was on all the time.

I think there was a guy and a girl rapping the whole thing, and the ending was "Uno Rap, Uno Rap, Uno Rap, Rap, Rap!"

Edit : of course, someone has uploaded it to YouTube.

https://www.youtube.com/watch?v=mkaIb1bmkxA