Unfortunately, this article doesn't go into real world examples. For example, most drivers in the U.S. and many other countries, are used to watching out for cars, SUVs and trucks, but not motorcycles. According to this article:

Over half of all fatal motorcycle crashes involve another vehicle. Most of the time, the motorist, not the motorcyclist, is at fault. There are a lot more cars and trucks than motorcycles on the road, and some drivers don't "recognize" a motorcycle - they ignore it (usually unintentionally).

One of the things I dislike about driving cars the most, is how comfortable they make the driver. They give the driver a false sense of security and plenty of distractions. A motorcycle, with the exception of some touring models, don't do much of that at all. I would say that riding motorcycles has helped me immensely as a driver, as when on a motorcycle, everything around the rider is relevant to the rider's safety and so one must be hyper-aware of one's surroundings.

There are plenty of other real world examples as well and while I can't and don't expect people to notice or care about everything that's going on around them, it does make me wonder how things might be different if people were taught to try to broaden their focus in daily life.