Panasonic is shipping what it says is Earth's lightest 12.1-inch laptop with a built-in DVD drive. At only three pounds, . Its magnesium alloy chassis can sustain a base drop of 2.5 feet while operating or up to 1 foot from any angle while off, it can withstand 220 pounds of pressure on its lid and it has a spill-resistant keyboard. Unfortunately, all of this comes at a discouraging, but expected price premium. Panasonic says the Toughbook S9 is available in the US with an MSRP of $2,499, which includes a three-year warranty.