Proximate cause of the accident was the negligent sign posting, showing the wrong lane. Also, Chancit contributed to the injury by not wearing his seat belt. If Chancit had his seatbelt on he would not have been thrown from the car, so Ford is not liable. Ford gives ample warning and notice that seatbests are required, and could reasonabl anticipate that they would be worn. Chi-Chi's is a red herring. Finally, Chancit was negligent in over correcting.
If Ford cannot be completely absolved, then liability should be shared under the concept of contributory negiligence. City of LA, Chancit are both complicit, negligent and share liability. Chi-Chi's is a long shot.
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