My office mate said that every high school driver's ed student should take a ride along with a trucker, as he did once. It gives you a gut feeling for how much a trucker actually can't see. I don't think a video game would give quite the same all-round sense, though it might help a bit.
I said they should all have an afternoon spent learning how to put out fires. It takes a little practice, and when you need the skill you really need it.
And I've said before that a driver's ed course should include a morning in a giant parking lot covered with ice learning how not to spin out.
And it would be good to learn basic gun safety, especially the rule about knowing what lies behind your target. There are plenty of pictures on the net showing how you can easily be so fascinated with the foreground that you miss the background; some "photobombs" might even be suitable for class.
My wife says that there's nothing like gardening for teaching the relationship between hard work and eating--though that's a longer project, and things tend to ripen during vacation time.
What sorts of one-day lessons do you think they need?
I know; some kids never see a farm. Others never see poverty (and I'm not sure a field trip would be well-received by anybody involved, including the "quaint" people being inspected). Video isn't remotely the same.