Nope, the gray car and the blue car parked next to the curb are Hudsons. That's the first car I remember as my dad would only buy Hudson Hornets, he'd trade it in every other year for a new one.
Nope, those are Mercurys. I've owned a '50 Merc, along with two '50, a '52, and a '53 hudson. Those are definitely Mercurys.