on edit: There are so many of these companies that are basically stylized versions of Alibaba listing pages or are basically re-skinning of some business process that, turns out, doesn't actually need to be disrupted. Transporting gasoline to fuel up someone's car? Really? We're going to be energy wasteful just to shave 10 minutes off someone's week?
The other disturbing thing is how many of these gadgets are IP enabled. I really hope YC has some kind of IoT advisor who insists upon security at a low level.