When I lived in L.A. and had a long commute, I went to a beauty supply shop and bought a mannequin head that they use for wigs. I attached it to a box and strapped “her” in using the seatbelt. Worked like a charm. Never got a ticket in the car pool lane. I called her Diamond Lane Debbie.
If they bitched about it you could have always married ‘her’ and told them ‘she’ was legally your wife, I mean now days you can pretty much marry what eve you want!