Consider to organise yourselves in an association of sorts in Australia. It's a good way to put pressure on government and companies, to have a formal organisation to bring up EV related topics, ie charging infrastructure, road and registration tax etc. In the USA, it's Plug In America | We Drive Electric. You Can Too. In Hong Kong we have set up Charged Hong Kong | Hong Kong Electric Vehicle Association recently Taiwan has https://www.facebook.com/pages/TEVA-Taiwan-Electric-Vehicles-Association/797196600297049 Have a look at other countries, what enthusiasts did. Or maybe you have such an organisation already? If so - sorry to disturb
We have the Australian Electric Vehicle Association, as well as a number of groups advocating renewable energy and EVs as part of that. We also have a number of private companies in the EV space lobbying everyone from the average bloke on the street to the top levels of government...