Really sorry man.
Based on having a flooded car/totaled car of my own, I would say that car is totaled. My Lincoln LS had maybe 6 inches of water in the interior and was nowhere near as high as the water level on your car, and it was just shy of $4000 in damage.
If the insurance company tries to fix it, contest. Water will rust your inside of the interior, there will be mold, possible motor damage, the under carriage will rust, etc.
A Flood vehicle car loses 50-60% of it's current value, and you will never be able to get anything for that car.
In IL, if the water damage exceeds 40% of the total fair market value of the car, the car should be considered a total loss. Let's hope the damage is 10K or greater on your car.
I also hope you either have most of the car paid off/completely paid off, or you have GAP insurance.
Keep your head up man.