Yes, it could be true. The creative minds behind the CastOven are seeking a way to make that concept true. What a clever idea, although myself I don't stand around the microwave waiting for the task to complete...but maybe now I would?
Whether this appliance comes to our real life kitchens or not, it's a fun concept worthy of posting. I am a huge fan of someone coming out with a microwave that can be paneled with cabinetry, so until that happens or until I invent that in my spare time (ha!), I think a youtube video will do.