Thanks! Nope, the "Silverado Slammer" is true honest-to-God 6x6. Not a "floater" axle, no extra motor. The center diff housing is machined aluminum with an input and an output, so the rear axle drives off the center and the rest of the E-Maxx drivetrain.
I won't make another big long schpiel about it like I always do, so check out the truck's profile on my site for more info:
Silverado Slammer on fivetwentyfour