balloons

[Immi666]

in a current ford mondeo advert showing in cinemas, people tie lots of balloons to their cars to make them float away. how many balloons would it take to lift a car?

[Clanad]

A whole bunch, according to this article (I've seen film of the actual event)...
http://tlc.ousd.k12.ca.us/~acody/larry.html

[Iggle Piggle]

several hundred I'd guess, but worth it if it gets rid of a Ford.......