John Travolta returns to Grease roots, sings 'Greased Lightnin' as Santa Claus in new Capital One ad

John Travolta has returned to his 'Grease' roots with a performance of 'Greased Lightnin' (as Santa Claus) in a new Capital ...

Watch: John Travolta as Santa sings 'Greased Lightnin'' in new Capital One commercial

Screen legend John Travolta can be seen singing "Greased Lightnin'" in a new Capital One credit card commercial.