First, it's a shame to wreck a classic to do the test, but still the test shows the classic car did not do such a good job protecting the passenger. It didn't even have seat belts as no one used them at the time anyway, but even if you disregard seat belts and air bags, you see the frame didn't hold up too well.
We'd like to think how some of those old cars were so solidly built (and some were) but today's cars are designed for impacts and designed to sacrifice themselves to protect the passengers.