It doesn’t just have to be on bike. I would say walking directions are far more valuable.

Let’s take what I say is the Peak AR Device:

Glasses with Shuttered Camera + LIDAR, Bone Conducting Audio, Haptic Feedback, High Quality Microphones, & Smart Assistant.

Often when I’m out in the city and finding a new place I would rely on my phone. Often the GPS on my phone would be screwed since I was underground and I would have to look at the streets on the map to see where I am relative to where I need to face and go. On the newer models of the iPhone I can use it’s LIDAR feature to tell it exactly where I am , but it’s cumbersome to wave your phone back and forth. An AR glasses would already be scanning around, know exactly what direction your facing , and give you visual indicators of where to go the whole trip.

Let’s say someone who speaks a different language ask’s you a question like say directions , an often enough encounter where I’m from. With the strides Apple are making in their Translate technology (with much more to go), the translated speech can appear as text right in front on your screen. Let’s say the show you a piece of paper enter in a different language. That same translate technology can show you a translated page. AR , if we get there, will be amazing and all of the technology I said above already exist in mobile form.