Based on what I saw at the above referenced website, I guess you need a regular butcher's saw to cut hotdogs.
In all seriousness, there never ceases to amaze me the different safety devices that pop up every day. We live in a litigious society, so for every accident (and future lawsuit) that can be avoided, someone seems to be working on a solution.
Control engineers take note. A little research and resourcefulness can uncover a multitude of better ways to build a mousetrap, so to speak. This site is one...
Safety should always be of paramount importance.