Go to the location shown in the video and start shooting at people until someone calls the cops. Kill the police to quickly raise your wanted level. At Level 5, drive through the underground parking garages. Close the doors behind you by pressing L1 + X. Inside the last garage, lock the door by pressing L1 + Triangle. When the door is powered down, nobody can enter. This effect runs out after a few seconds -- so you must quickly power it up and down again if cops are outside. If they did not see you driving into the garage (your radar turned yellow), this should be easy. After your radar turns yellow, you must stay out of sight for one minute. If this route does not work on the first try, just drive through all the parking garages again at a higher speed. Try to be out of sight by the time you reach the last garage.