Twins Jimmy and Stella live in a town called Wymore, where nothing exciting ever really happens. One morning they find an old note about an old machine called the ‘Hippomobile’, an old contraption that hasn’t worked for years. The twins decide to try to get it running again. Mabel’s Cafe, the only restaurant in town, is struggling to stay in business, and the twins think that maybe if they get it running they will get more business to come to the cafe and it will be able to stay open. With the help of their many grandmas and grandpas, they have many adventures, but will they get it running again?
This book was really funny and it had a lot of times where the twins were getting nowhere but they always figured out a way to do something. All the grandmas and grandpas were pretty funny too. My favorite grandparents were Grandpa Milton and Grandma Henrietta. Grandma Henrietta always won at playing checkers with Grandpa Milton, so Grandpa Milton always wanted a rematch. Finally Grandpa Milton got a book about checkers and won his first match! Then Grandma Henrietta wanted a rematch! I think everybody who likes mysteries and silliness will enjoy this book too.