Abstract: A portable electronic device is disclosed. The electronic device can be used inside a motor vehicle to collect and store information regarding operation of the motor vehicle. The electronic device can include a processor and a digital memory. The processor can determine miles traveled by the motor vehicle during a trip and store data representing the miles in the digital memory with a trip identifier identifying the trip. The miles traveled can be determined using data from a location sensor, such as a global positioning satellite device, that determines locations of the motor vehicle during the trip. The electronic device can also include an audio mechanism into which a user can speak information about the trip. Such audio data can be stored in the digital memory and associated with the trip identifier. Other data representing information about the trip can also be stored in the digital memory.