courtesy audi At Mobile World Congress Audi announced that a collaboration with AT&T would bring 3G and 4G LTE Wi-Fi technology to its 2016 range. Audi 4G LTE means "better voice activation and better voice diagnostics," according to AT&T's chief executive Glenn Lurie. LEIA Inc New tech start-up Leia creates 3D holographic displays. Multiple LEDs are projected across a thin piece of plastic or glass, forming an image that appears to float above the screen. Xensr XensrAir affixes itself to BMXs, snowboards or wakeboards. Paired with a phone or laptop, the device tracks your jump height, speed, distance, and airtime.