Cool idea, I like that they didn't choose a random product to try an market, but an actual real world application. As a driver more than a walking pedestrian, I think these light-ups would be awesome on the road. Even during the day. I consider myself to be a good driver, but this would definitely help out.
I have to add that generally a 10 year old is not going to give you the next big app idea. 10 year olds will have no more creative ideas than you or me. But just like the lottery, it could happen.
You may be right with regards to the next big app idea, but I'd disagree with the idea that 10 year-olds are no more creative than adults. Over time people tend to get less creative with regards to big ideas due to self-limiting based on operating within the confines of existing systems.
When you've operated inside the box long enough, your mental models assume the walls of the box even if they cease to exist simply because so many assumptions about reality are based on prior experience.
I have to add that generally a 10 year old is not going to give you the next big app idea. 10 year olds will have no more creative ideas than you or me. But just like the lottery, it could happen.