Woah, driving a car is my dream sign! In almost 50-75% of my dreams I am involved with some sort of transportation. It's usually driving the car, but sometimes I'm in a plane or on a boat. So yes, I have many examples. I think the two best things that have happened was once during my second or third lucid dream I made a pistol shape with my hand and then shot at something out the car window. The shot happened to be a nuke so I made a nuclear explosion outside of the car. Everything went really bright and the car protected me, plus I was lucid so I had a bunch of sensations, one was an intense warmth that felt amazing. The second best thing that I've done in a car was when I was driving the new Camero. I got up to almost 200 km/h hurtling down a highway (a highway I frequently drive on outside of Vancouver) and then I see a big hummer turn into my lane. When we crashed it was one of the best sensations I felt in a dream. Everything went sort of slow-mo. I could feel myself lifting out of the seat. And I knew that I was in a dream so I wasn't afraid.

Try thinking about lucid dreaming every time you get into a car. It might help to trigger one. You can also do a reality check every time you get in a car.