+1 on calling insurance and call it quits with the car. The headaches you might face will not be worth it. Plus personally I couldnt put money on a car that'll never be the same again.
If you do have that much of an emotional attachment though...
-Tow the car to a heated garage of yours or a buddys. Rent a storage space if you have to.
-Take plugs out and coil packs, unplug fuel pump fuse and crank engine to eject any water in cylinders
-Take off the seats and let them dry.
-Recommended to take off the carpet as well. If not, buy some moisture absorbent packs and lay them all over the car. When i say all over I mean COVERING the interior floor.
http://www.damprid.com/product/hi-capacity-moisture-absorber-4lbs-fg50t
-I'd change oil/tranny fluid/coolant/power steering and even re-bleed the brakes but if you want to do just some do at least oil and tranny fluid.
-Grab some electronics moisture displacer and spray all connectors in the engine bay
-I'd even consider using it on the inside connectors as you should be letting that car sit for at least a week in a heated environment drying
-Allow it to dry and pray
-Once dry buy some Rust Spray Oil and coat the entire bottom of the car from end to end.