Dream of

I was on a journey in a mates workvan, he was at the back of the van fetching something from a box. we nosedived into the water, couldnt see my friend as it dawned on me i was trapped inside and was going to drown and die in seconds, was a very vivid dream, not usually as vivid as this dream was, i woke gasping for air and petrified i was dead, the water was deep and still and clean