For the electric buses, as I explained, the problem is not the traction, it's not that technology, but only the batteries. If you want to have some range, you have to have a smaller bus. That's why electric buses in Europe today are only smaller buses, 9 metres long. But within the next 5 or 6 years, and maybe 10 years if we're unlucky, the battery industry is really gearing up for the auto industry. They are investing millions and millions of dollars to develop the electric battery because they want to sell it to the car industry.
On May 29th, 2012. See this statement in context.