I was going home from my grandmas and suddenly me and my sister were driving train on the road
This dream could potentially symbolize the dreamer's desire for control and direction in their life. Driving a train is a powerful and authoritative action, and doing so on a road suggests a desire to take charge of one's own path. The fact that the dreamer's sister is present may indicate a need for companionship and support in their journey. Alternatively, this dream could be a sign of the dreamer's sense of adventure, and a willingness to explore new and unconventional paths in life. Overall, this dream suggests a strong sense of autonomy and empowerment.