Dreams like yours, filled with intense action and emotions, can often reflect feelings of fear, vulnerability, or anxiety in your waking life. Here are some possible interpretations of your dream:

1. Fear of Threats: The presence of the black pickup truck and the man chasing you could symbolize a perceived threat or danger in your life. This could be a literal threat or represent something more abstract, like stress or anxiety about a situation.
2. Feeling Vulnerable: Being chased often reflects feelings of vulnerability or being overwhelmed. The fact that you were ducking down suggests a desire to hide or avoid confrontation, indicating you might be dealing with issues that make you feel exposed.
3. Need for Escape: Your instinct to run and hide could signify a need to escape from something in your life that feels oppressive or threatening. This could relate to personal relationships, work stress, or other responsibilities.
4. Communication Difficulties: The moment when you tried to yell for help but found your voice gone might suggest feelings of helplessness or frustration in expressing yourself in waking life. It could be indicative of situations where you feel ignored or unheard.
5. Support from Friends: Your friend’s presence in the dream signifies the importance of companionship and support in facing challenges. This might be a reminder to rely on your friends or support system when facing difficulties.

Overall, this dream could be prompting you to reflect on any current fears or stresses you might be experiencing and consider ways to confront or address them. It might also be beneficial to communicate your feelings to someone you trust.