Fuente: WIPO "honey" A safety alert system for use in a motor vehicle cabin. A temperature sensor and a carbon dioxide sensor operate in conjunction to detect the presence of a person within the sealed vehicle cabin in unsafe circumstances. Based upon preset parameters, a local alarm or notification or operator notification can be triggered in the vicinity of the vehicle if an alert condition exists, or in some embodiments remote alert notifications can be triggered to vehicle owners or safety authorities. An auxiliary carbon dioxide sensor could be located within the trunk of the vehicle in addition to within the vehicle cabin. A video capture subsystem could also be included, to capture video of the cabin of the vehicle on detection of the alert condition, and the video could be archived or transmitted to safety personnel. The method of detection of a human in an unsafe vehicle environment is also disclosed.