Google has slowly changed how it displays driving directions to limit routes to ones it thinks burn less fuel. When plugging in the drive to get to my parents it presents one option that uses a ferry. The directions treat the ferry like a bridge that you could use at any time, and it no longer presents alternate routes that use actual roads.
The ferry runs twice a day.

@Apiary

Sounds like somebody at Google's overdoing the green thing. That's unusual. And you make a great point about how infrequently the ferry runs. Have you pointed this out to Google yet?

@ginaintheburg that is Not My Job.
Also the problem is they assume ferries have no timetable. They are labeled as toll roads.

@Apiary
Nope. Absolutely right. Not your job. But it's probably #AI & I think they seek feedback on their searches, as I recall.

But totally your call. Just a suggestion.