"🚗⚙️📖" refers to a manual gearbox, which is a mechanical component found in vehicles. It is a system of gears and shafts that allows the driver to manually shift between different gear ratios, controlling the power and speed of the vehicle. The "🚗" represents the car itself, the "⚙️" symbolizes the mechanical gears, and the "📖" signifies the manual aspect of operating the gearbox.