Where exactly do I pick up my car, at the terminal or at 780 N McDonnell Rd?

Does the bus 292 also stop at the pick up site?

Take the train to the car rental. You will see sights everywhere, just follow them.

From the international terminal you take a tram to the car rental area. There, you have hertz counters and the car lots.

You need to take the air train to the rental car offices