I can't figure out what make of car this device is fitted to. I agree the interior sems to be of a Rootes car of 1960's vintage, but I don't remember any of their designs having that little quarterlight to the left of the parcel-shelf.
I can, however, imagine a typical conversation which might have been heard inside this car.
Cold winter's night, lots of ice and snow about, nice and warm in the car. Chauffer stops the car outside a country house where a party is going on.
Husband: "Thank you, Jackson. We'll be finished at about 1-ish. Bring the car around to the front about that time."
Jackson: "Very good, sir." Remains seated at the wheel.
Wife: "Isn't he going to open the door for me?"
Husband: "It's very slippery and we don't want to be without a driver if he breaks his leg, do we? You're so damn spoiled!""
Wife: (snorts) "Well, it's not you who has spoiled me. Remember, It's daddy's money that has bought us everything!"
Husband: "Anyway, darling, we have the wonderful new sand dispenser to hand to make our first few steps safe, won't we?"
Wife: "Oh yes, goody! How clever!"
Husband: "You did bring the sand, didn't you?"
Wife "What? You never said anything about bringing sand. Anyway, where am I supposed to carry it? In my tiny evening bag?"
Husband(getting angry): "No, darling. I left the pack just inside the front door. You were supposed to give it to Jackson to carry! I did tell you, but typically you weren't listening!"
Wife: "It's always my fault, isn't it? Why couldn't you give it to Jackson? Anyway, I've just had my nails done and a great big bag of sand would break them!"
Husband: "God, why can't you get anything right? I suppose we'll just have to risk it!"
Opens the door and starts to get out, banging his head hard on the sand dispenser.
Husband: "Damn it!" (Blood is starting to drip from his head onto his white dress shirt) "Who's bloody stupid idea was this anyway?"
Wife: 'Yours, dear."
Webmaster, free feel to delete this post if you wish. I won't be offended at all.
Richard.