That depends entirely on the voltage in the wires. A proper high voltage line could draw an arc to the wheel and chassis if they get close enough (less than a m

That depends entirely on the voltage in the wires. A proper high voltage line could draw an arc to the wheel and chassis if they get close enough (less than a meter can be enough). The people in the cabin should still be protected by the Faraday effect. But anything outside that cage or close by may be effected - it's almost impossible to predict which way the currents would flow.