My son wrecked his 2006 WRX

There is no 'easy' way other than maybe syphoning it using a hose. Hate to say it but it is probably not worth the trouble. Do you have several gas cans?

Next time buy him a slow car.

Don’t worry; salvage yards will drain it before parting it out, as that’s a legal requirement.

Get a garden hose, and some kind of smaller hose. Insert the garden hose and the smaller hose, Plug around it with a small rag to help create a vacuum. Then blow into the smaller hose while holding the garden hose down into a can. Saves your taste buds from good ol' go fast juice.

Brilliant! Archimedes is laughing in his grave!