Yes, I did. It wasn't Toyota for me. It was another well known car company. Unfortunately, I sent out info for it before I found out it really was a scam. Hotmail just suggested that someone was using my email address to deliver their scams. I was urged to change my password, and i did.

  Needless to say, I receive at least one of those daily. If you aren't sure it's always good to ask before sending any of your private information off to them.
See: http://www.sweepstakesplus.com/smf/spotting-a-fake-win-example-t71561.0.html