Originally Posted by
Feathers McGraw
That'll be like when they went over the field behind my house with that trailing rope that caught on the power lines at the edge of Cardington airfield, I wasn't worried about them getting snagged on my fence either.
There's the answer then: trail a long HV cable behind it and limit your routeings to those of the National Grid's HV transmission lines. No batteries required - you work it like an upside down trolleybus!