If you've ever Googled a restaurant before, you might have noticed that the search results show when people visit most frequently. Google uses aggregated data to figure that out from people's Google Location results. And while that was handy, the data wasn't in real time, so it couldn't tell you if 50 people just showed up at the door. Now it can. Look for a glowing pink bar to show you how busy the restaurant is right that second.
If all the restaurants you want to go to are too damn busy, we'd recommend planning ahead and getting one of those fancy meal delivery services. There's never a line for those.