I think plug in electric cars are good for short trips. They can be solar powered.
"As Australia looks to cap carbon emissions with targets for renewable energy and the introduction of carbon credits,
WorleyParsons said it aimed to deliver 40 percent of Australia's renewable energy needs with 34
solar power plants by 2020...
The first plants would cost around A$1 billion each, and the company is assuming it would cost around 15 cents a kilowatt hour to produce power. Meurs said as newer technology became available, the
plant cost was likely to fall.
Carbon credits would have to be priced at well over A$10 a tonne to make the
solar power plants commercially viable and at A$50 a tonne would make
solar power look relatively cheap. By comparison in Europe, where carbon trading is active, credits have been trading at around 26 euros ($38.74) a tonne for December 2008 delivery."
http://au.biz.yahoo.com/080812/19/1voq5.html
also
http://www.smh.com.au/news/energy-sm...306901743.html