The driver was originally pulled over for crossing solid double lines and then the officer saw the realistic-looking plastic dummy sitting in the passenger seat.

 
Highway patrol issued a citation for using a dummy to drive in the carpool lane.

https://www.fox28savannah.com/news/offbeat/carpool-lane-dummy-realistic-life-like-looking-skin-driver-citation-highway-patrol-arrested-funny-snoop-dog-california-santa-fe-springs-office-police-appearance-plastic