The 5 year-old startup Uber is shaking up the taxicab and black car markets with a predicted 'Uber valuation' set to disrupt some of the long established giants.  The booking app that quickly managed to disrupt the space is currently operating in 53 countries, and locally in Brisbane and Gold Coast. According to Uber Brisbane manager, Mr Mike Abbott, "Uber has been successful because our technology is pro-consumer, pro-driver and pro-community.” (source: Gold Coast Bulletin). Despite the attacks, Uber is taking the controversy and regulatory challenges in its' stride, and more so to its' financial success. "If Uber completes the funding, the valuation…