The arrival of the first service pack for Windows 7 will plug a range of minor bugs and offer a number of improvements, but is likely to be a further spur to businesses.

Although every other big carmaker is launching new hybrids (including plug-ins) and purely battery-powered vehicles, or is preparing to, Toyota is convinced that it is still ahead of the pack.

Together with a big battery pack based on lithium-ion technology, this gives plug-ins a much larger range in all-electric mode, after which the petrol engine kicks in.