When Will & Carlton are in the taxi, they're traveling north on the Las Vegas Strip and several casinos are shown out of order. One example is them passing the Holiday Inn Casino and then in the next shot they're passing the Excalibur Casino. Since they're traveling north, they would pass the Excalibur before the Holiday Inn.
When Will and Carlton are in the taxi driving on the Las Vegas Strip, they're shown suddenly switching back and forth between northbound and southbound several times.