What does my dream mean?

In my dream I had to flee my home in a rush due to a home invader or robot. So I grabbed my young son(my daughter also a baby was not in the dream which I found odd) and I ran to my car. When I got to the car there was a large snake on one of the car seats (I am not fond of snakes). I was nervous but because this was life or death I threw in from the car and placed my son in the front seat . I managed to lock the car doors just in time and I sped away terrified for my sons safety because I did not have time to put him in the baby seat? What does this mean?