Just the shape of the front end makes me think Plymouth. But then we all know opinions are like assholes - all of us have one and everyone else's stinks.
The crest is confusing since it resembles part of the Cadillac emblem, but I guess you are right, looks a lot like the '59 Plymouth front. I have one of these pedal cars, it would look cool converted to a Sport Fury convertible.
I agree . . . I see 59 Plymouth as well. But, I'm guessing the manufacturer of these things made them just generic enough to avoid having to pay any royalties to any one of the companies!