if you want to bust out some calculus... the limit as x (loads in parallel) approches infinity is 0 ohms.... you'll never get to 0 ohms. even in a short circuit there is still a point zero something ohm load. the closest thing to 0 resistance is a superconductor, and i highly, highly, highly, highly doubt that anybody has a superconductor in their car, or an amp that could withstand 0 ohms... unless all of the circuitry in the amp was superconductive... lol. but then, no alternator could recharge a battery fast enough either. its all rediculous