Google Maps driving directions to Europe

Last weekend when my sisters were visiting, I used Google Maps to get driving directions from Boston to Manchester, MA. However, I was ambiguous about which Manchester, and Google maps gave me driving directions from Boston to Manchester, England. I’ll let that sink in. The directions tell you to go Long Wharf and then swim across the Atlantic Ocean to France, and take a slight right. It even allocates 29 days of time for the swim, which is 3,462 miles. I’m not a swimmer, but to complete this leg you’d have to average 5mph, which sounds impossible. I’ve been looking for other places that return crazy directions, but unfortunately it seems like you only get to go swimming if your driving between the US and Europe.