If only painting is so easy....

I found this on the net, and found out that they are called the pixelroller, and what they have done is that they created a paint brush that looks like a vacuum cleaner and are able to print the images on to a big sheet of paper, i do not know if that's real or not, but even if the video is fake, i will not say it's impossible to create such a product in the future. And wouldn't it be great if we are able to create product like this? People can save more times on printing especially people who are doing a roadshow they can simply just put a big blank banner and just print the logos or images on it on the day itself! And designer who always use computers to do their illustrations are able to experience hands on to paper itself. So, i won't say this is a useless product, infact i think this is a pretty good idea and very interactive and let people experience the process of the "printing".