It seems that Google Now is starting to show a “Gas stations on your route” card for some users.
This card will show gas stations that are along the route that you’re driving, just as the name suggests. It will include the name of the station, distance and how to get there.
The card seemingly pops up when you are driving, so Google is pretty much guessing where you’re going and is showing you gas stations on your way there.
This looks like a solid addition to Google Now’s tricks as we all know sometimes it is difficult to find gas stations just using the signs on the road so this is a big help for all of us.