If the other guy has insurance, I'm sure you've already started a claim with his company right?
Go see a Dr. at the ER and ask for them to check you out for fx. (Your going to have a sore back and neck I'm sure.)
Your Supra is likely a total loss. The rear body has been crushed slightly, and you can see where that stress is buckling your quarter panel, and also how it affected your hatch latch location. Frame time is needed to restore the frame control points, and that will cost some money. Then the insurance company will look at how much the repairs in total will cost v/s the value of your car based on NADA or a similar service and decide the car is a total loss. (Costs more to repair than to replace it in their eyes.)
Here is where you have some leverage.
1) You are not at fault for this loss. He hit you, and pushed you into the vehicle infront of you. Make sure that is what the police report says, and what your insurance company is told. Same with his insurance. (And the guy who's in front of you, he has a claim with the acura too.)
2) Your injured. (IF your not, get injured now, or at least get checked out. (It's your major source of leverage, and you do not want to lose it at this point in the game.)
3) Get some values of other supras like yours locally. Look in the auto trader, and other online sites as well. Come up with a realistic value, and then present that to the insurance adjuster if they don't offer you that much or more.
4) Be prepared to settle if they are reasonable. If you think your car is worth 1500.00 and they offer you 1500.00 and you keep the salvage, that is a good offer obviously, and you should resolve for that. Same goes for your injury claim. If they resolve your car loss, and offer to cover your med bills and give you some cash to cover your pain and suffering, or incovienance and discomfort, lost wages and other "costs or losses" then resolve the claim and get back to your life.
Good luck.