I figured both cars you can see were late 40s. Maybe the one on the right is a caddy convert? '48 series 62?
Honest to goodness, that was my first and second impression too. Then I began second/third guessing myself, thinking I could see the trademark Caddy mini-fin taillight sticking up. Expanding the photo did no good. I violated the old axiom that “your first thought is usually correct“.. The error is especially painful since I am a many decades admirer of ‘49 Buicks. Ray