How do you activate overdrive on road trip 2?

To activate overdrive in Road Trip 2, you typically need to reach a certain speed, usually around 45 mph or higher, depending on the vehicle. Look for an "OD" button or switch on your gear shifter or dashboard; pressing it will engage overdrive. This feature allows your engine to run at lower RPMs, improving fuel efficiency during highway driving. Always refer to your vehicle's manual for specific instructions relevant to your model.