Back to the Future

Back to the future: Dr. Emmett Brown is ready to kill himself along with Marty in that parking lot during the first time travel scene. Not only has he never tested the time machine, but he claims that many of his inventions have been failures. So during the moment when he's about to find out if his life's work was a huge success or a complete waste, he not only drives the Delorian towards himself but grabs onto Marty when he tries to run away. If that first-time travel test was a failure, they both would have been killed, which is exactly what Doc wanted had the experiment been a failure.