> Dump the current on a giant resistor and hope it doesn't melt? That's called an induction brake and it's already widely used in trains and semi trucks. That

> Dump the current on a giant resistor and hope it doesn't melt? That's called an induction brake and it's already widely used in trains and semi trucks. That said, you still need a friction brake at low speeds, since the induction braking force is proportional to velocity.