before your confimation, i mailed pontiac (they even had a specific division for dealing with questions about their advertising) and this is the answer i got. if it really is "la raza," this must be some lame auto-reply!

Thank you for contacting the Pontiac Customer Assistance Center. I appreciate you taking the
time to contact us on the name of the song in our latest Vibe commercial.

I receive many positive messages from customers regarding the music that is used in Pontiac
commercials as well as requests for where they may obtain this music.  The musical selections in
our commercials are often written exclusively for the commercial, as was this one.  The music is
recorded by studio musicians as 30-second time spots and remains untitled.  I apologize, it is
not available for public sale.  Other songs are remakes of popular songs, used by permission,
and may be available at your local music store.

Thank you for giving me this opportunity to assist you.

To contact us, please e-mail
us again or call our Pontiac Customer Assistance Center at 1-800-222-1020. Customer Relationship
Managers are available Monday through Friday from 8:00 a.m. to 11:00 p.m.

Please don't hesitate to contact us again if you need further assistance.

Sincerely,

Linds Haller
Customer Relationship Manager
Pontiac Customer Assistance Center