| Electricity source | CO2 emissions (g/km) |
| Coal | 122.07 |
| Oil | 85.54 |
| Gas | 52.65 |
| Nuclear & Renewable | 0 |
Figures from IET Engineering & Technology magazine, 6th-19th June 2009, pg 22
How green your electric vehicle is will depend very much on the generation source of its power, not taking into account the battery technology used, and if it is Lithium Ion batteries, then it will suffer in the same way as the Toyota Prius. Green cars either need a whole new power source, or a much greener source for the electricity generating stations. Without either of them, then the "green revolution" in motoring will be all hype and no substance.
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