Had all kinds of driving dreams.

Like you, sometimes they center around "no control," and were mostly that the brakes don't work (like someone else mentioned).

Some other times, the steering is off.

Other times, I'm in the backseat and there's no one in the front, so I gotta drive.

Some other times, though, the themes have been really amazing. Like exploring, journeying to new lands, seeing something beautiful, even bouncing in a safe but physics-defying way, or even flying.

Dreams are cool, mysterious, and have crazy emotional impact (to the dreamer, while sounding fairly silly and uninteresting to listeners lol).