The tip-off was the sunglasses.
A New Yorker faces a $135 traffic fine for using a mannequin as her "plus one" in the high-occupancy vehicle lane of the Long Island Expressway.
An alert sheriff's deputy on Long Island became suspicious this week when he saw the "passenger" wearing sunglasses and using the visor. The problem: The sky was overcast.
When he stopped the vehicle, he found the mannequin, fully dressed with a long dark wig, blazer, shirt and scarf.
The 61-year-old driver left with a summons. In addition to a fine, she could be hit with two points on her license.
"At first glance, this may seem humorous but it is not a joking matter when you drive off with a ticket," Sheriff Vincent F. DeMarco told NBC News.