Elbow GreaseBy: John Cena Illustrator: Howard McWilliam Series: Elbow Grease THE #1 NEW YORK TIMES BESTSELLER! From superstar entertainer John Cena comes a new picture book series all about perseverance and believing in yourself, featuring a little monster truck who never gives up named Elbow Grease! Meet Elbow Grease, a little monster truck with a big problem! He's smaller than his four brothers, but wants to prove that he has the guts and the grit to do big