An operator invested heavily to build a highway connecting the urban area and the airport. This highway is shorter and better than the original urban highway to the airport. Of course, this private highway has tolls. After running for a period of time, the operator found that the traffic flow was much less than expected, and this expected "fortune road" did not immediately attract money. If the following are true, which one is the least likely to cause the above result? ['People would rather spend more time than pay extra "toll fees".', "Most people who go to the airport don't know that the new highway has been opened.", 'The financial crisis affected the income of local residents, and fewer people went out to fly.', 'Driving on a highway is more dangerous than driving on a regular highway.']