I'm thinking that thing hanging from the window looks like one of those old canvass water bags. My folks used to hang one of those in front of the radiator to help with overheating when on long uphill grades.
You know you are getting old when you actually used something shown in an old timer pic! Haha.
2021 Gulfstream Vintage Cruiser 19ERD.
2018 RAM 1500 6 cyl Ecodiesel
"Have Rod Will Fish"