Digby O'Day in the Fast Lane by Shirley Hughes illustrated by Clara Vulliamy*

I read this aloud in one sitting to my preschooler.  Adorable, entertaining and exciting!
Digby O'Day (a dog) and his friend Percy (a dog) enter a road race.  Along the way they encounter some trouble but an earlier act of kindness helps them win the race!
Tons of fun features: a character description list; maps; road games; a FUN comprehension quiz
*Highly recommend.
Great for reluctant readers and for being stamina.
A second one in the series was published this summer-Digby O'Day and the Great Diamond Robbery.  A third one to be published in March 2015 (UK).
Fun fact-the illustrated, Ms. Vulliamy, is Ms. Hughes' daughter!