Poole to Studland via the ferry to France
It's got nothing to do with new maps. Try directions from Poole to Studland, which is a peninsula about 7 miles away. Google maps tells you to hop onto the Poole-St Malo ferry and, this is the interesting bit, jump off the ferry as it passes Studland. Either that or it wants you to drive along the middle of the harbour. (see popup window of the route).
"Turn left and head toward Poole-St. Malo 496 ft
Continue on Poole-St. Malo 3.4 mi
Turn right and head toward Ferry Road"