It’s easy. Stand at a bus stop. People who know you will drive right past you. They don’t expect to see you at a bus stop, so they don’t.
Here’s the view from one of my bus stops (on Lincoln Avenue). Now that I’ve been riding the bus a bit more, I notice the sound of buses all the time—even if I’m not waiting to get on one. The whirr-roar of the diesel engine. When you’re standing invisible at a bus stop, that sound is music.