It was Dateline, not 60 minutes. NBS was sued successfully by GM due to NBC rigging the tests with detonators to "enhance" the effect. Keep Googling.
From an article about Ken Auletta'
" A key decision-maker at NBC says that it was "outrageous" for Gartner to stonewall G.M. and to defend his own news staff even after he learned that someone had hidden miniature rockets on the truck and detonated them just before the collision. Even before Gartner resigned, on March 2nd, he was about to be fired. "He knew about this incident for several days," this man said. "He didn't investigate it in depth. He should have looked into it more, because he was aware that he was being sued before he issued a statement defending News."
