Maybe I have my European biases, but it's amazing to me that the absurdity of eating restaurant food in your car rather than around a table is not striking to everyone.
Of course, in the late 40s this would be a fun gimmick - what is really absurd is that the concept of eating in your car seems to somehow have become normalized somewhere along the way. Again, seen with European eyes - of all cultural differences, there are others I struggle more with.