Sounds like you may need a glass bottom truck, so you can find your last truck.
heh heh... Oh, I know right where it is. The only one that stayed where I put it fell through the ice... Took a buddy with scuba tanks to get my tools and guns out of it... I still have that same sawbox in the back of my truck right now.
But most of the time, it was in the river, and very seldom sunk over the roof...