So imagine a technology that shines a laser on a car or a block of concrete and makes it blue There is something like that for sheets of steel at least https:/

So imagine a technology that shines a laser on a car or a block of concrete and makes it blue There is something like that for sheets of steel at least https://www.youtube.com/watch?v=2ncEfAxkuFA https://www.youtube.com/watch?v=2ncEfAxkuFA And here is a video explains it https://www.youtube.com/watch?v=RsGHr7dXLuI https://www.youtube.com/watch?v=RsGHr7dXLuI