The bus takes a wrong turn-- not the
  driver's fault, they just closed the
  road for construction. He realizes he's
  fucked up once he gets into the parking
  lot; gravel and close-packed cars.

    Then he makes his second mistake;
  goes right, ends up at a dead end.
  Trapped between rows of cars only half
  a bus-length wide.

    Somehow, displaying sheer prowess 
  and years of practice, he reverses,
  finds room for the ass end of the bus,
  and pulls off a three point turn.