12 Internal combustion air flow management devices, namely, throttles, EGRs (exhaust gas recirculation), exhaust brakes, wastegates for use with vehicles; pressure vents, vacuum vents and fusible caps for vehicles and liquid containers made of plastic and metal; fuel cell and internal combustion engine coolant flow management devices, namely, coolant bypass and coolant throttles for use with vehicles; automotive drivetrain applications for vehicles, namely, expansion and contraction of fluids contained within drivetrain and devices that control movement within drivetrain; breather vents and expansion chambers for vehicles; vehicle parts, namely, waste heat recovery valves