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The Doc tells "TMZ Live" his '57 Chevy is the same as Hart's 1970 Plymouth Barracuda in that it's equipped with lap belts but not safety harnesses … and he doesn't know what to do about it.
As Dr. Phil says — they don't make cars today like they used to … and that's not always a good thing. He shows us there's really no way to easily install shoulder strap seat belts with the way the car's built. That's not the case with Kevin's Barracuda — shoulder straps could have been installed.
Phil points out old cars like his and Kevin's don't perform nearly as well in crash tests as modern vehicles and, without making changes … survival rates in crashes are much lower. In fact, he says he's stunned Hart is still alive.