14-Year-Old Genius Alaina Gassler Solves Car Blind Spots

I wonder how practical it would be though. Isn't it going to be tricky to get the perspective lined up correctly? Mirrors can be adjusted, won't this need to be somehow?

How does it look to passengers too? I could see it being a bit distracting since it won't line up at all and will be changing all the time. I could even see it being a bit nauseating, though it's hard to tell without seeing it.