What would you do?

[Hart1]

Last night I received via US mail a thank you letter from my dealer for buying the Hummer H2. Attached to the thank you letter was a card that stated in bold, red letters:

"Redeem For Free Tank Of Gas", or something to that effect.

I thought, wow! a free tank of gas! I will run it till empty, and then redeem my card for free gas! (Just filled up at COSTCO @ 247.9)

Then I started to read the small print on the card, under the bold, red letters(the small print is never good news), "Bring in your GM Survey, uncompleted, and receive a free tank of gas."

What would you do? Take the gas, or take the GM survey?