On the topic of boredom and attention lapses while driving, I wonder if it would actually be made safer by being made more difficult, in contrast to the never-ending search for ease of use. Something that's difficult, mentally stimulating, and requires actual skill like a video game or musical instrument. Would there be more or less mistakes (collisions) if people were forced to be engaged 100% of the time in order to operate the vehicle?

I'm not saying it's a good idea, because only a subset of people would be capable of it, but it's interesting to think about!