also above the lower strip there is a cross section.
Let's say you start at the lower strip in the middle at the bottem facing north, go north until you can take a right. As soon as you turn look on the left and get out of the car. Flip the switch.
Step 1 -- at the opening of the level, take the first right turn, and follow it down.
Step 2 -- make a left to go to the Tropicana area.
Step 3 -- turn right at the second street, and make the first left turn.
Step 4 -- follow the S curve, stop at the crosswalk, and look to the left to see a closed gate and a building.
Step 5 -- drive by the building with the four cones in front of it; at the end of it is an open gate.
Step 6 -- enter the gate, and the switch is next to the fence at the end of the building.
Step 7 -- get out of the car, go to the switch, and press the triangle button. This will open the closed gate you first saw.
Step 8 -- drive into the newly opened area, and the bonus car will be located at the end of the building.