what does max amps really mean?

[BrianG]

Yes, and no. The Neu motors are rated for a certain amount of power. They most likely determine the max current rating for whatever voltage the motor needs to reach the max rpm of 60k (using the kv value). For example, the 1512 2.5d is rated at 2000 for the kv and 3000 watts max. Well, to get the max speed of 60k rpm, you'd need 30v. 3000 watts devided by 30v is 100A. But since they say 3000w "max", they probably derate the current a bit.

With cars/trucks, you almost never pull that kind of current constantly. Usually, you pull 120A+ on takeoff and heavy acceleration, but the average current is MUCH lower. I wouldn't worry about it unless you plan to gear to the moon or haul something.