But the average use for a Windows 98 configuration is just south of 128MB, so we still have several years, as that demand tends to crawl forward at around 50 to 100 percent a year.

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This means that when the vehicles come across a particularly steep or slippery slope, they can anchor themselves with five of the wheels and inch each wheel forward one at a time, to crawl over an obstacle.

BBC: Mars robots begin test campaign