This is less of a self-consciously clever Quentin Tarantino-Guy Ritchie maneuver, and more in the poker-faced, un-ironic spirit of classic older films that inspired them, like "The Killing" and "The Killers" and "Criss Cross" (another armored car-focused crime thriller, remade by Steven Soderbergh as "The Underneath").
Little more should be said about the plot, which at some point takes a sharp turn into the noir terrain Soderbergh plumbed in his 1995 Criss Cross remake, Underneath.