You. Assuming that not having a brake that automatically sets is considered a product defect (it generally is not today, but one can imagine a situation in whic

You. Assuming that not having a brake that automatically sets is considered a product defect (it generally is not today, but one can imagine a situation in which it would be), you had bought the car new through normal channels, and your car had this condition as a result of manufacturing problem and not something you did after purchasing it, then under normal product liability law the manufacturer and every other entity in the chain of commerce between them and you would also be liable (and that mat start earlier than the manufacturer of the vehicle but also include the upstream part manufacturer and everyone between them and the vehicle manufacturer in the chain of commerce if the defect was in the manufacture of a part and not just the final vehicle. But that liability doesn't reduce yours; you and all the entities in the chain of commerce can be “jointly and severally liable”, mean anyone who suffers injury can recover the full amount from any combination of you and those other parties. Gravity is not legal person and cannot be at fault.