"Girls in a car" by Margaret Penrose is an exciting novel with elements of the adventure genre, which tells the story of brave and independent friends who go on a road trip. Exciting adventures, dangerous travel situations and unpredictable circumstances make this book exciting for readers of all ages. In addition, Penrose's novel offers ideas of friendship, courage, and self-belief, making it an interesting read for both young readers and adults who appreciate seeing the world through a lens through relationship building and self-improvement.