[instarx]

That is basically a squirrel-cage fan that pulls air from the center and exhausts it around the edge. That is an interesting automotive application. Squirrel-cage fans can pull air across higher resistances than vane-axial fans (typical propeller fans) and move much more air at higher velocities. That means a smaller fan using less horsepower can be used. Or you could use a denser, smaller radiator with this type of fan. Squirrel cage fans are also much quieter.

Here is an idea - if you put an enclosure with an outlet around that fan you could direct all (or any fraction) of radiator air into a duct that could be routed anywhere - eliminating the need for hood and fender extractor vents all together.