If playing solo, start by opening the front doors of the Ultor Building. Return to the street and wait for a Comet to drive past. Note: This may take some time. When one appears, jump inside and drive the Comet inside the Ultor Building lobby. Crash the car into the large desk that the Ultor CEO is leaning on. If playing in co-op mode, have one player get into a Comet in the vicinity of the Ultor Building. Drive it to the Ultor Building and have the other player open the building's doors. Once the car has been driven inside, crash it into the large front desk.