*MASSIVE SPOILER ALERT FOR ANYBODY WHO ACTUALLY GIVES A SH**
I think it was with an $8 fill-up and the attendant would tell people to hold on for a minute, then he brings out a Ziploc bag with water and a couple of goldfish giving it to customers with a WTF look on their faces. I guess it sure made it easy to track her down.
One of the dumbest things I've ever seen in a supposedly serious movie.
Actually, the goldfish were awarded for every $10 gas fill-up, not $8.
And yes, it was quite silly, but was clearly a contrivance to make the gas station identifiable to Katie's husband when he comes looking for her since she mentioned it to him when she phones from Dr. Lewis's house.
Speaking of silly, how did Katie's brother identify the one town with a covered bridge in upstate New York close to the New York State Thruway within a few hours of New York City without the use of the Internet in 1987? Doubtful such information would have been readily available from his local library.
Maybe Police? Godd point tho.
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Back in the day, even into the 80's you wouldn't believe the stuff you got as give aways from companies. Fill ups could get you just about anything the station owner had a cheap connection to. Sets of glasses, first aid kits, meat, (yeah meat, I know gross) and even stranger things. Fish kinda seem like a pain in the ass though. I think it was just taking the practice to a higher more ridiculous level in this movie is all, and as was mentioned it was a plot driver that helped the movie along.