AS IT is on climate change, asylum seekers and Tiger Woods, opinion is divided on electric cars and the impact they’ll have on the fuel-based breed Australians still love.The big hurdle for electric vehicles (EVs) initially is prohibitive prices. Like many new technologies the first models are expensive, effectively limiting them to governments, businesses and cashed-up early-adopters. But EVs are coming.While the Australian government has shown little interest in electric cars, preferring to throw money at more mature technologies (conventional, locally built petrol-powered cars), every car maker around the world is investing hundreds of millions developing vehicles that can be recharged from household powerpoints, potentially using green energy such as wind or solar.Volvo, Audi, Nissan, Mitsubishi, Toyota and Holden are all lining up to join the electric race and even Porsche and Mercedes-Benz have EVs in the pipeline.Unlike hydrogen cars and hybrids, there seems to be agreement that electric vehicles have potential, although even the most ardent supporters concede the vast majority of vehicles on the roads in a decade or two will still slurp petrol or diesel.EVs will take many forms but expensive batteries and the lack of a high-voltage, fast charging network will limit appeal of vehicles that will cost more than otherwise similar vehicles.Either way, they have the ability to produce zero carbon emissions, if Australia can wean itself off its addiction to electricity produced from coal. This iswhere governments need to take control and make hard decisions that won’t necessarily impress all of big business.