So, there is one use case where a competent voice AI system would be nice.
And that is, when I am driving, and no one else is in the car, I would like to be able to ask the assistant to add a specific intermediate destination to the navigation plan.
Specific. As in, exactly what I asked for, and if there is not one in reasonable diversion distance, information to that affect. As in, if I ask for a credit union, do not send me to a bank. If I ask for a Wendy's®, do not send me to a Burger King® just because BK paid for placement this week. And if I ask for a Japanese restaurant, I do not want Thai food. And if there is no Japanese restaurant, just tell me there isn't. Don't make one up. And don't send me 60 miles out of the way, either.
And I do not want this to preempt my ultimate destination. I just need twenty bucks, a Frosty®, and some ramen. I have not bailed on wanting to see my niece this weekend.
This is such low-hanging fruit, and yet nobody has come up with a passable implementation so far.
Nobody wants to spontaneously buy a TV. Everyone spontaneously gets a craving for an ultraprocessed ice-milk beverage food product.