We've been following Honda's self-balancing motorcycle developments for years, watching as the company has brought out multiple design concepts for demonstration runs, just to show how its technological developments are progressing. And while you may or may not see yourself ever personally being interested in a self-balancing motorcycle, it's difficult to deny that the technology is, in and of itself, interesting.
The same could also probably be said of Asimo, Honda's friendly robot mascot that it developed for many years prior to its eventual retirement. Because the important thing to realize about Honda (and about a lot of companies that invest in R&D, particularly if they operate in more than a single niche) is that years of research like this aren't kept siloed and secret, away from other parts of the company.
Instead, as is plainly evident in the Honda UNI-ONE, all these different pieces of research can (and sometimes do) come together to form a completely different thing, and one that could potentially be useful and practical for a completely different purpose.