Future business travelers may literally ride a laser to work. The U.S. and Brazilian Air Forces are experimenting with Lightcraft technology that could become part of your daily commute, using plain old air to fuel 45-minute transcontinental jaunts.
The design uses a ground-based laser to beam the Lightcraft skyward on a series of blast waves. A parabolic mirror on the back of the craft would capture and focus the pulsing laser beam so that it heats air to 5 times the sun's temperature, creating mini-explosions that propel human passengers or cargo to any point on the planet in under an hour, or into orbit.
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