"Chevy"

I heard on the morning news that GM is instructing its employees to always refer to Chevrolet as Chevrolet, not as Chevy.  They apparently want to portray a grown-up, mature brand.

Good luck with that.

Chevy is ingrained in the culture.  They'll have to retrain thousands of NASCAR fans.  

They'll have to get songs re-written: "Drove my Chevrolet to the levr-o-let but the levr-o-let was dry"

It's good for Dodge (Ram) and Ford, through--they only have one syllable.  Easier to say.