Transcript for Small plane crashes and bursts into flames on a busy California freeway

We move on to another story producing tales of heroism. Look at this dramatic video of a small plane slamming into a busy freeway in California and bursting into flames. Heroes pulled two people from that blazing fireball. ABC's Marci Gonzalez is at John Wayne airport with more on the crash and those good samaritans. Good morning to you, Marci.@ Reporter: Good morning, Paula and Dan. Yeah, one of them was an off-duty firefighter who happened to be right there not far from this airport. The pilot taking off from here at the start of this busy holiday travel weekend and realizing within mopes something was seriously wrong. This startling video capturing that small plane plummeting from the sky bursting into flames on a busy southern California freeway. The problems beginning just 43 seconds after the pilot was cleared for takeoff. Hey, we got a mayday. 297, mayday, try and make it back to the airport. I lost my right engine. The twin engine Cessna skimming past the traffic below incredibly only clipping one vehicle. Had a passenger in there. Saw flames around us. Reporter: Those exploding on the packed 405 freeway sending plumes of black smoke into the air. The plane, holy It's a plane. Reporter: Motorists rupping to help. Be careful. Move them away further dragging the pilot and passenger out of the wreckage. Just moved him over to the side. It's one of those thing, this can't be happening. Reporter: Covered in blood but miraculously alive. John Medford among the good samaritan S rushing to their side until paramedics arrived. It took a lot of people in order to make it all work out and the response was amazing. Reporter: Emergency crews working quickly to put out the flames. We have patients outside of the aircraft. The fire has been knocked down. Reporter: Investigators still trying to figure out what caused the crash. We buy twin engines for this because of the redundancy because if you lose one you have another one. Why that doesn't work here is the question. Reporter: And the NTSB is now investigating. The two people who were on that plane are still hospitalized but listed in stable condition. Dan and Paula. Thank you. To politics and the first lady is stepping into that escalating feud between

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