miguel lopez saw everything. he was working on the expressway filling potholes when all of a sudden -- >> the plane hit the ground. they came straight down. they hit the tree tops. >> reporter: that's when he and his co-workers sprang into action. >> we started slowing down the traffic so nobody would get hurt and the plane doesn't get hit by the cars. >> reporter: it worked. the pilot and two passengers walked out of the plane and onto solid ground alive and relatively unharmed thanks to the quick thinking pilot and the fast acting department of transportation workers. >> and authorities are still investigating why exactly the plane's engine failed. the founder of amazon.com was evacuated after he developed kidney stones. jeff baseos had to be flown out of a navy helicopter. they said that baseos did not need surgery and is feeling well