More than 200 people are searching for Daisy, a cat who went missing in the Little Dunmow area.
Drone pilots have been enlisted to search for the Calico who bolted from a man's car on the A120 on Thursday, July 22.
A Facebook group called 'Cat Daisy lost on the A120' has 229 members and counting.
Daisy, who is microchipped, is thought to have climbed into a man's car in Thorley, near Bishop's Stortford.
The man realised Daisy was in his car between Dunmow and Braintree.
He pulled over, but the cat bolted.
Rose Bradnick, Daisy's owner, said: "Daisy is a precious member of the family.
"She is the family's queen, and a kingdom is nothing without a queen!
"She has helped us through the challenge of lockdown."
Rose said Daisy's younger sister, Moni, is "struggling without her".
She added: "Everyone involved in the search for Daisy has been incredible."
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