Thanks to alert reader Jim Smith, who commented:
Angela Lansbury drove one of these in the 1954 classic 'A life at stake.'
I had a look at one of my favourite websites, the Internet Movie Cars Database, and sure enough, they have a photo of the car in question though it’s hard to tell if Ms Lansbury is behind the wheel. Looks to be the same colour as the one at RAM.
Wikipedia describes the movie as a film noir. I won’t spoil the plot for you if you haven’t seen it, but it’s available for free download at the Internet Archive. Thinking of having a look for myself, to see how much the car figures in it.