Dreams involving driving often symbolize your sense of control in life and the direction you are heading. In your dream, the switch from your mum driving to you taking over could indicate a desire for independence or a shift in responsibility. It may suggest that you are transitioning into a phase where you feel more in control of your choices.

The drive-thru setting represents a desire for convenience and quick satisfaction, but the complications you faced—waiting for the light to turn green and the delays in receiving your order—might reflect frustration or impatience in your waking life regarding achieving your goals or fulfilling your desires.

The presence of Phil Dunphy, a comedic and sometimes clumsy character from "Modern Family," may signify a need to find humor in stressful situations or perhaps a reminder not to take things too seriously. The chaotic scene with fries everywhere and the staff's reactions could symbolize feelings of overwhelm or a sense of scarcity in your life—whether it's time, resources, or support.

Overall, this dream suggests a mix of wanting to take control while feeling frustrated by delays or obstacles. It may be helpful to reflect on areas in your life where you feel stuck or overwhelmed and consider how you can approach these challenges with a lighter heart.