First Responders BK63 UBU A Fiat Panda Twinair 4×4 that is on loan to Fast Aid first responders. This … 26 January 2014 ukemergency BK63 UBU A Fiat Panda Twinair 4×4 that is on loan to Fast Aid first responders. This 2013 model is fitted with a frugal 875 cc engine that produces 85 bhp.Another view of the Panda 4×4. Share Follow