A driver was pulled over by the police for illegally changing lanes without using a turn signal. The police officer asked the driver for his driver's license and proof of insurance. As the officer was handing the driver his traffic ticket and without any further suspicion, the police officer asked and received the driver's consent to search the car. While searching the car, the police officer found a large sum of cash, guns, and drugs in a hidden compartment in the trunk. Prior to trial, the driver files a motion to suppress the cash, guns, and drugs arguing that the search was unlawful. Was the search unlawful? Why or why not? Explain your answer fully.