Plug-in hybrids remain the type of electrified vehicle that makes the most sense because they release the driver from dependence only on a battery-fed powertrain.

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On the bottom edge is a trick flap that's both a micro-USB socket and a USB Type A plug depending on how it's positioned -- the micro-SIM slot is cleverly hidden behind it.

ENGADGET: Topic: Mobile

And in some regions, cottonseed hulls are processed into oil-drilling mud, a sticky, industrial-strength type of Play-Doh that is used to plug leaks in oil wells.

NPR: Texas Cotton: 'Farmer Profits at Every Step'

The Tesla Model S is a plug-in electric luxury sedan than can travel between 160 and 300 miles on a single charge, depending on the type of battery chosen.

FORBES: 1. White