Hmm, to build a flying model of a B-17?
Or a model of a P-38?
That's a very skillful photoshop, not a flying model (although I'm sure it would fly if someone built one). Biggest tip-off is the prop blade rotations are identical.
As I see it, the inboard motors are ever so slightly forward of the outboard motors, which gives you clearance, unless the inboard ones get damaged and bent into the path of the outboard's blades.The props look like they'd interfere with each other too. Too close together so timing would have to be spot on and hope one doesn't stop for any reason