Dante's Peak

Cast and crew of this movie found themselves in a distribution race with 20th Century Fox, which was producing Volcano (1997) at the time. Due to a sped-up production schedule, this movie reached theaters almost three months earlier than Volcano, and had better box-office success.

(at around 1h 21 mins) The one-lane bridge leading out of town is wide enough to fit two cars side-by-side during the evacuation, yet when the vulcanologists are fleeing in the Humvees and USGS van later, it is barely wide enough for one vehicle. This is because this scene features a miniature bridge and model vehicles. When Paul's van is stuck on the edge of the bridge at the end of the sequence, everything is back to full-size again and you can see there would be room for two vehicles side-by-side.

Edited into Tycus (1999)