Car driven through floodwaters not starting -UPDATED

My exchange student thought he could drive my wife's Honda Odyssey through 2 feet of water (his words, possibly more). It stalled and we could not get it started even after the water receded. Others around him did the same thing but had better luck and were able to drive away. The cabin didn't get water in it but he told me he was trying to plow through it quickly to get to higher ground.
I would hope after drying out a bit it would start but I don't have such luck with vehicles. What are we looking at WRT to repairs?

Now 24 hrs later, garage we usually go to has 2 week backlog so towed it to the house. Dripping oil so I suspect that major damage was done. Wet water filter confirms water ingested. Insurance comp. was called yesterday so and we’ll let them handle it. Thanks for the input. As upsetting, inconvenient, and costly as this will be in the long run it’s just a car. I’ve read a lot sadder stories on TD to help keep things in perspective.