Ever been there and ridden any rides? Been to any other "theme parks" where they have similar rides?

What strikes me (no, no, not literally) is that compared to cars on the roads, roller coaster rides don't seem to be constructed in such a way as to protect the occupants in the event of a crash?

With road cars, they do tests with crash test dummies and observe how the car crumples in a crash but with those roller coaster cars, there's no crumple zone, no airbag, very little.

Yes, I know they're not supposed to crash in to anything but one did last week. Road cars are not supposed to crash in to anything either but many do every day.

Anyone know if there's been any crash tests done with roller coaster cars?