This Michigan Arby’s Has the Drive Thru Window on the Wrong Side
Study that picture closely and you'll see that the drive-thru window of this Arby's is located on the car's passenger side.
The restaurant is located on Southfield Road in the Detroit suburb of Allen Park. The odd set-up is caused by the space available to the restaurant which doesn't allow for a conventional driver-side window.
Reddit user Choco316, who shared the strange drive thru set up to the /r/MildlyInteresting forum stated that if there is no passenger in the car, the money is collected and food served by a worker passing a basket with a stick into the car to reach the driver.
Or you could just walk inside to make your order.
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[reddit]