Dreams involving loved ones and their possessions, like a car, often reflect our feelings of attachment, concern, or anxiety about their well-being and the relationship itself. In your dream, the car could symbolize your girlfriend's independence or aspects of your relationship that you value.

The scene of someone else trying to drive her car and struggling could represent feelings of vulnerability or a fear of losing control over something important to you—perhaps your relationship or her safety. The distress you felt while watching this might indicate underlying worries about her or the dynamics of your relationship.

Crying and holding onto her in the dream suggests a need for reassurance and connection. It reflects your emotional investment in her well-being and may highlight a desire for closeness, especially during uncertain times.

Consider reflecting on your current feelings about your relationship. Are there any underlying concerns or insecurities that need addressing? Open communication with your girlfriend about your feelings could help strengthen your bond and alleviate any anxieties you might be experiencing.