What would happen if you floor it when it is in zero-turn mode?
Two big old honking pieces of cast iron, each with internal rotational inertial masses of its own, and the dynamics of conservation of energy, being forced into an ever-changing vector - those rotating masses being turned out of the original plane will force some of the components to right angles.
I would predict rapid self-disassembly and a new winner of the Darwin Award.
That and you'd see your lunch plastered all over the windshield. :-0
Kind of like my soda just plastered all over my monitor when I imagined someone attempting it. :D LOL!
"... and a new winner of the Darwin Award."
With 670 horsepower, 740 lb-ft of torque and a zero turning radius, I can only imagine so; especially if you put this guy behind the wheel:
http://www.442.com/multimedia/redneck.mov
http://www.442.com/multimedia/redneck.mov.sit