Barfing in the backseat

When Hank's dad enters a crossword-puzzle tournament out of town, he decides to take the whole family along as a treat. And they get to spend a day at a theme park! Hank can't wait but he has to finish his homework first, which could be difficult as he seems to have lost it on route. Can Hank rescue the lost homework and still make it to the theme park on time?