Shocking footage shows an ambulance explode into a fireball - moments after an elderly patient is dropped off at home. <br /><br />David and Marilyn Brinklow were having a cup of tea when they heard a huge bang and saw flames engulfing their front garden.<br /><br />Minutes earlier, a private ambulance had dropped off the couple’s 91-year-old wheelchair-bound neighbour after a hospital stay. <br /><br />Footage shows two care workers wheeling the woman to her home in Barton-under-Needwood, Staffs., at around 1.45pm on March 14.