I Have Very Vivid Dreams

Two very vivid dreams go back to when I was 5 or 6 (am 76 now), but I never forgot them. They both had to do with water. In the first one, we were riding in my dad's truck and crossing a body of water. We weren't on a bridge but more like a levee with no railings or barriers--and we drove off into the water. That's when I woke up, scared, and took a while to go back to sleep. In the second dream, we were coming back home to Iowa from Illinois when we had visited my aunt. We were crossing a very wide body of water on a very high bridge (that wasn't the Mississippi, for sure), and the bridge collapsed into the water. Again, waking up abruptly. Always curious about where those dreams came from.