In an early scene, Dr. Benford (Sonya Walger) jokingly calls her husband "Shakespeare". Her husband, Agt. Mark Benford, is played by Joseph Fiennes, who played William Shakespeare in Shakespeare in Love (1998).
On the submerged bus a young woman yelling "Nem tudok úszni! Nem tudok úszni!". It's in Hungarian and it means: "I can't swim! I can't swim!"