HAX, the hardware startup investor and accelerator, along with Airbus, is looking for start-ups to join a four-month accelerator program aimed to advance developments in urban air mobility, a.k.a. "Transportation in megacities needs fresh ideas to improve the way we live," said Mathias Thomsen, urban air mobility general manager at Airbus, in a press statement. "We believe that adding the vertical dimension to urban mobility will improve the current congested megacity transport systems." The selected startups will receive at least $100,000 in seed money, and spend four months in Shenzhen, China, turning their ideas into prototype with help from HAX and Airbus engineers. Applications can be submitted here.

Imagine, a family vehicle that sounds like 16 lawnmowers. Flying cars are a forever icon of the future. Personal aircraft, with the ease and convenience of home automobiles, and without any of the downsides of airplanes or helicopters, have so far proven if not impossible then impractical, despite decades of attempts. But Google cofounder Larry Page isn't about to let all that history get in his way. The first, founded in 2010, is Zee.Aero.