When I was commuting I used to have something similar to this hanging out of the trunk (I used to joke that if I got pulled over regarding 'commute lane' (at least 2 passengers) I would tell the policeman that I did have a second one. Turns out some people reacted differently;
I came out from paying inside gas station to find a crowd around my car. A older women cowered away from me muttering I was evil. She barely knew English and didn't understand the rest of the crowd explaining that it was fake.
Another incident was someone chasing after me despite my screeching around corners to lose him. At a stop sign he pulled up beside me screaming, "Who the fuck you think you are??!!!", over and over. I replied, "Someone with a sense of humour!". I then saw the infant in a car seat in the back of his vehicle. I think to myself, this is 11:30pm and this guy puts his child in danger in order to make a point?
and yet another. I'm stuck in traffic jam on the commute home. I see this guy talking on phone with great distress to my left. I get home and I have a message from a gent from work, "******, you need to call the police right now. I heard on a police scanner that they are looking for you. A car registered to **my name** in a 76 Buick Skylark with plate number ******".

I had heard the helicopters going over earlier and thought, hmmm, they must be after someone. After the message I called Campbell police and the women laughed and said "Oh I just came on shift and heard about you. You need to call San Jose Police". I mentioned that they sell these at any novelty store but they insisted that I remove the leg even though it was fake. They had come on property to verify it but never once came to my door.