name that song!!!

[answers2424]

there is a car advert (don't know which one) where cars are flying around and doing acrobatics in the air.

Whats the song called?
it starts with, "hey world, here i am"

the song is also sung by Robin Williams in Mrs doubtfire.

[gracie.f]

If its the Vauxhall ad its Don't Rain on my Parade by Bobby Darin
http://www.commercialbreaksandbeats.co.uk
A good site for this sort of stuff.