DreamsMaster: Do you feel the relationship with your boyfriend is getting a bit “out of control”, like it’s going too fast and you can’t “put on the brakes” to slow it down? The dream could be enacting these metaphors.
That said, keep in mind that sometimes dreams are literal warnings. In this case, have you picked up on any clues that your boyfriend’s truck may be due for service, and perhaps requires new brakes?
Consider both angles, and then think about what you need to do to gain more control and feel less powerless in your current situation.