It was through the Red Hot Summer Days promotion in 1999. They gave away 3 Explorers by the "look under the label" format. There were also 47 second chance prize winners by sending in a 3x5 card with your info. We won #43 of 47.

My Mom also won the Albertson's Superbowl sweeptakes a few years later. That included a 53" rear projection tv, BBQ, & a 2003 Chevy S-10.

My mom was the sweepstakes queen for a while. It was her part time job. She won 3 snowboards from Pringles (in different family members/household names), A motorized scooter, a couple of trips, and a voucher for the Richard Petty Driving Experience in Vegas. There were probably 100 other smaller prizes, too.