For some odd reason I had never read Varley, an author who was first published in 1977, before I picked up this book. After this experience, I realized my mistake. Red Thunder makes some rather preposterous assumptions in order to underpin a story. A decade or two from now, two lower class Florida youngsters dream of going to space. They and their girlfriends accidentally run into (actually run over) an ex astronaut who has fallen from grace. Said ex astronaut has a quasi autistic genius cousin who has accidentally invented an immensely efficient and cheap form of energy generation/propulsion. Seeing as the Chinese are on their way to being first to Mars and the American expedition will not only be second, but may well have an accident on the way, this motley crew builds a spaceship.
Appalled yet? Most authors would have made a hash of this and turned out unreadable drivel. But Varley concentrates on the people aspect. The whole thing becomes an excellent, funny and exciting coming of age story.