Both drivers cam out intact according to the vid description
I haven't confirmed but I think it's the throttle that stuck open
http://www.carthrottle.com/witness-a-porsche-964-rsr-rally-car-smash-into-a-barrier-then-land-in-water/
yes
he's also the local NASA (Great Lakes/Midwest region) Chief Instructor and he's raced karts for years...as well as road raced Miatas and other stuff