A New New-Car Smell?
"General Motors recently revealed that its Cadillac division has engineered a scent for its vehicles and been processing it into their leather seats. The scent -- sort of sweet, sort of subliminal -- was created in a lab, picked by focus groups and is now the aroma of every new Cadillac put on the road.

It even has a name: Nuance."

Quote taken from here.

Edited to correct HTML mistake.