An Arizona driver with a "Seusspicious-looking" passenger was caught in the HOV lane, prompting authorities to remind commuters that inflatable holiday decorations do not count as another person in the car.

The driver was on I-10 near Avondale Boulevard for an early morning commute with an inflatable Grinch holiday decoration in the passenger seat.

Inflatable Grinch in passenger seat

A "Seusspicious-looking" passenger was caught in the HOV lane on I-10 in Arizona. Authorities are warning drivers that inflatable holiday decorations don't count as another person in the car. (Twitter/Atlanta  Department of Transportation)

"The trooper stopped the driver and determined the grumpy green guy was, in fact, an inflatable Grinch," the Arizona Department of Public Safety said in a Twitter post.

The driver was cited, although DPS said they appreciated the holiday spirit.

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"With extra traffic on AZ roads this time of year, be sure you understand the law (ARS 28-737) & restricted times before using HOV lanes," DPS cautioned. "Don't be caught with a grinch."

In Arizona, High Occupancy Vehicles (HOV) lanes are enforced Monday through Friday, from 6 a.m. to 9 a.m. and 3 p.m. to 7 p.m. to assist drivers with two or more individuals in the vehicle during rush hour traffic. 

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"HOV lane violators are as cuddly as a cactus, as charming as an eel" the Arizona Department of Transportation added, continuing with the "How the Grinch Stole Christmas" theme.