If you’ve contacted a green dome with your vehicle it’s important you stay inside until you have sought further instruction from Western Power. Wires carrying potentially life threatening amounts of electricity may be in contact with the vehicle which may energise it.
The safest option is to stay inside the vehicle until help arrives or you’re instructed otherwise by Western Power. If it’s unsafe to stay in your vehicle, jump well clear keeping both feet together. Don’t touch the vehicle and ground at the same time then shuffle away keeping both feet together. Check out this handy video about what to do if your vehicle is in contact with live electricity.