Alright this is like the biggest problem with my Supra. I'm hoping someone else out there had this problem and know what it is cuz I can't figure it out. I keep getting my passenger floor behind the seat soaking wet to the point that there's like a swimming pool. And most of the time the passenger rear seat cushion is really damp too. But this is the weird part that I can't figure out. Yesterday we had a big rain storm here in PA and after the storm was pretty much over and I checked both the seat and the floor and for some reason it wasn't wet. But once I started driving down the road I heard this waterfall effect and the next thing I know my floor now has a swimming pool now. So somewhere my Supra is storing all this water and when I move down the road it's migrating to the passenger side of my floor in the rear. The driver side is never wet, neither the driver side rear seat. Where could this water be entering from and where is it storing it all until I move? The rear hatch seal on my car looks almost perfect so I don't understand how water is getting thru. My guess is one of the side windows or something went bad. Anyways, if anyone has a really good guess at what's going on let me know. I apperciate all the help.