From the Hero Games website:
RIDING THE RED LINE
The Ultimate Vehicle is a comprehensive guide to vehicles in the HERO System. It provides advanced and expanded rules for gamers who want to build anything from a chariot, to a sleek sportscar, to an airplane, to a star cruiser, to a mecha! Whether you need to know how sailing ships work, how to make five small mecha that combine into one gigantic super-mech, or how to run exciting car chase scenes, The Ultimate Vehicle has just what you need.
The Ultimate Vehicle includes:
—general rules for vehicle design in the HERO System
—individual chapters devoted to specific types of vehicles (ground vehicles, watercraft, aircraft, spacecraft, and mecha), with rules for simulating the way they move and function
—extensive rules for vehicular combat and using vehicles in adventures
—an equipment chapter jam-packed with pre-built vehicle systems for easy “drag-and-drop” vehicle creation
—guidelines for creating vehicle-oriented characters
—over fifty example vehicles, ranging from stagecoaches to starships