Clara: I love you!
Marty: (w.t) Doc, Doc! What's happening??
Doc: (w.t) It's Clara, she's on the train!
Marty: (w.t) Clara! (to himself) Perfect.
Doc: (w.t) She's in the cab. I'm gonna go back for her.
Marty looks out the window. They've passed the windmill - the point of no return!
Marty: (w.t) The windmill! Doc, the windmill! We're going' past 50, you'll never make it!
Doc: (w.t) Then we'll have to take her back with us! Keep calling out the speed!
Doc turns to Clara and shouts to her.
Doc: Clara, climb out here to me!
Clara: I don't know if I can!
Doc: You can do it! Just don't look down.
Slowly, Clara begins to climb out of the cab.
Doc: That's it!
Marty tells Doc the speed.
Marty: (w.t) 60 miles an hour, Doc!!
Clara is making her way closer to Doc during the following.
Doc: (to Clara) You're doing fine! Nice and steady! Come on! Just a little further!
Clara: I can't Emmett, I'm scared!
Marty: (w.t): 70!
Cut back to Doc and Clara.
Doc: Come on...you're doing fine...nice and easy...that's it...don't look down...
Marty: (w.t) Doc! The red log's about to blow!
Doc: Clara!
Another explosion. Clara nearly falls of the train, but her dress catches on something and she's hanging upside down.
Doc: Whoa!!
Clara: Emmett!
Doc: Clara! Hold on!
Clara: I can't!
Clara's dress is ripping and she's getting closer to the ground. Inside the DeLorean, Marty notices the hoverboard.
Marty: (w.t) Doc! I'm gonna slip you the hoverboard!
Doc: Marty! Watch out!
Marty sees a sign saying that the track is not finished yet. He ducks and the car smashes through the sign, missing Marty's head though.
Marty: Argh!
Clara: Ahh!! Ahh! Emmett, help!
Doc: Hold on, Clara! Whoo!
We see the end of the bridge, and the train heading towards it. There isn't much time left! Cut back to Marty and Doc.
Marty: (w.t) Doc! Catch it!
Marty sends the hoverboard flying toward Doc. Doc manages to "catch" it with his feet.
Doc: Whoa!
Marty: Yes! Yes!
Clara: Emmett!
Doc: Hold on!
Clara's dress rips and she falls.
Doc: Woah!
He picks her up just in time, and they fly off on the hoverboard.
Marty: Yes!
He watches Doc and Clara fly off. Marty then notices it's almost time! He shuts the car door and puts his hat on. The DeLorean reaches 87mph. We cut to the display panel. The camera does a close up: OCT 27 1985. The speed reaches 88 and the DeLorean heads into the future. The train reaches the end of the bridge, falls into the ravine and explodes. There is a great cloud of smoke.
The smoke fades away and we see the bridge as it is in 1985. The three sonic booms are heard and the DeLorean coasts safely across the bridge. It passes by a billboard for "Hilldale: Hill Valley's Newest Homes - You'd Be Home By Now" - and travels through a level crossing (railroad crossing) which has the barriers down and lights flashing. Marty looks at the people in the cars, who are giving him strange looks. The DeLorean stops just beyond the crossing.