I once parked my 300D on a nice sunny afternoon under a lovely oak tree. I left the sunroof open. I came back to the car to find that a broken sprinkler head was spraying a thick stream of water about 15 feet in the air, and the downfall was CENTERED in the sunroof opening. I measured 4 inches of water in the back floorboards! Driving was a nightmare, especially when I had to hit the brakes and a river flowed through the car. Anyway, I took it to the neighborhood car wash. The vacuums there are wet/dry vacs. Cost a few dollars, but sure did get most of the water out. Good luck!

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R Talley
88 BMW E32 735i (make it go away)
95 Volvo 960 "Inga" (valve problems)
95 Nissan Maxima (the indestructible)
89 Ford Ranger XLT (ugliest truck in the South)