Most newer cars have fuel pump shut off so if there is a wreck or issue where the car is violently shaken the fuel pump will shut off preventing damage. The location varies from model to model for ex. some Fords are by the passenger side kick panel and addresses this in the owners manual. Not sure if the Caliber has this or not but it may be a place to start.
2009 SXT mods comming soon as my personal banker is not looking