Just a bit ironic that, in a case with missing bodies, a woman whose husband was associated with a type of place which has been known to disappear bodies just happens to call in a tip of that sort. Hmm.... But life is full of coincidences (though some think there's no such thing).
Hopefully her husbands job was checked for missing people and missing cars. They probably don't keep the best receipts when hiding bodies in crushed cars.