STILENA!AU:

Instead of Matt being the one driving the car over the bridge that night, it was Stiles driving his Jeep, soon the two being driven off the bridge by Rebekah Mikaelson. Damon, still infuriated with the fact that Elena was the one to die; attacks Stiles. Elena manages to get there in time — now fully transitioned into a vampire, saving Stiles before Damon got the chance to kill him.