Useful intelligence, but unlikely to be current given the speed of advancement in AI technology. I use Gmaps on an Android phone attached to the screen using a Quadlock magnetic arm (very good). But the AI does need to be used with a little common sense. A described route may be shorter, and may be able to divert you round delays. However it takes no account of the human cognitive load in following a complex unknown route, and the likely exposure to a greater number of turns and other higher-risk scenarios such as narrow roads. Often it is better to stick with a known, or main-road route, even if the time taken is longer, for a lower-stress experience. It would be helpful if the software engineers were able to introduce a routing option that picked the 'lowest-stress' route but that would require the coding of some very tricky human factors.
Also, Gmaps does simply make mistakes sometimes. For example, it knows where Waitrose is in Wellington, Somerset, but not where its access road is. (It's not through the wall of an adjacent light-industrial estate.)