I Googled a local Indian restaurant I wanted to order from this weekend. The top result had the restaurant name and looked like their site. Online ordering sent me to MealHi5, which didn't seem to think there are any restaurants in our area. So I called, ordered, and asked about online order when I picked up the food. It turns out they have a different domain that is setup (I think, and/or Google is good at recognizing restaurants) to show an "Order Online" button under the Google business summary. That takes me to a different online ordering site that isn't MealHi5 that I'm assuming works.

I'm assuming either a service did the "register a domain for all the local restaurants" trick, or they switched restaurant hosting providers and the domain changed but not the top result in Google, or something else.