Ha Ha..
Hooker, I do remember those things..seems like they may get in the vision line to the right if kept in the passenger side window..
When I was a teenager, there was a local artist (landscape painter) who was a parapalegic (perhaps a wounded vet of WW2)..so he would drive around the countryside, park his '49 Buick, sit in the back seat and paint.
He had one of those things in the passenger side window..I often wondered if that ever helped while the car was parked.
Could it be possible.... with extra charged batteries on board ?