Shell's "Million Gallon Giveaway"
The 'lifetime' prize isn't entirely open-ended - winners actually get 302 $300 Shell Gas Cards, based on 50 years of driving 13,500 miles/year and consuming 675 gallons a year.
"Scratch and Win" game cards are available at Shell outlets through October 1, and even if you don't win, it's not a total loss - each game card features a money-saving fuel tip to improve your fuel efficiency. Follow the "Read" link for full contest details.
[Source: Shell Oil]
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