Some of us experience intense anxiety when thinking about being stuck in a locked subway car.

Add a knife-wielding maniac to that bete noir, and you’ve got a fairly miserable evening commute.

That’s what happend for 30 unfortunate straphangers on the D train Saturday after Jerry Sanchez stabbed a man in the neck with a steak knife, killing the guy.

Reports Metro:

When the train pulled into the Seventh Avenue stop at 53rd Street, the NYPD told the motorman to keep the doors locked tight so Sanchez, 37, couldn’t escape. Terrified passengers huddled on one end of the car for five minutes waiting for the cops, while Sanchez calmly sat in his seat, according to reports.