Dialogue between one of the world's most experienced racing car designers and a technical author-graduate engineer on the theory and technique of racing car design and development. Contents include: The anatomy of a racing car designer; biography of Len Terry; description of nearly 30 Terry designs from clubman's sports car to Indianapolis winner; a blank sheet of paper; handling characteristics; the theoretical aspects; oversteer and understeer; practical implications; structural considerations; space-frames and monocoques; the cockpit area; the structural engine; progress and legislation; suspension; changing needs and layouts; the torsion bar; self-levelling systems; anti-dive and anti-squat; progressive-rate springing; stiffness/weight ratio; brakes, wheels and tires; influence of smaller wheels; twin-disc brake systems; attention to details; low-profile tire phenomena; aerodynamics; wings and things; intake ram effect; ground effect vehicles; the cooling system; radiator location; cooling the oil; safety and comfort; primary and secondary safety; driver comfort; materials; components-ball joints, batteries, brakes, clutches, dampers, drive-shafts, electrics, flexible bearings, flexible fuel cells, gearshift linkages, instruments, non-return valves, non-spill fuel fillers, oil and fuel pipes, Perspex mouldings, radiators, springs and steering gear; design versus development; the competition-nine other racing car designers discussed; future developments.