Four Reasons We Don’t Have Flying Cars—Yet Ifeadi C. 00:20 Feed: All Latest, Zero Tech Blog The technological hurdles facing the development of aircraft for urban mobility systems like UberAIR are massive, but not insurmountable. via Zero Tech Blog Share this Share on FacebookTweet on TwitterPlus on Google+ Related PostsThe best travel sites to help you plan the perfect tripAustralia's most popular natural tourist spots are under threat from climate change'Stranger Things' Shannon Purser got a delightfully sneaky message from her baristaThis 18-year-old cartoonist promotes positivity through a genderless, pink beanUrban Dictionary wipes offensive and racist definitions for 'aboriginal'Everything sucks, but then there's this adorable, rare newborn Malayan tapir