At least someone is working on useful things for the future. Teeny-tiny power supplies that convert pressure waves into energy:
The field behind this innovation is "piezoelectrics," which aims to develop self-powering electronics, eliminating the need for replaceable power supplies, such as batteries. Piezoelectrics are actually materials, such as crystals or ceramics, which generate a significant amount of voltage when a form of mechanical stress is applied, such as a push.Can't wait for the piezoelectric ride at Tomorrowland.
The concept isn’t new. It was used in sonar devices during World War I, and is applied today in car cigarette lighters. Pressing down the lighter button causes impact on a piezoelectric crystal that in turn produces enough voltage to create a spark and ignite the gas.