Next time you see a B737, have a look see which surface of the tailplane the vortex generators are nailed to.
btw, Cunard did operate an airline for a time. They bought out Eagle Airways from Harry Bamberg because he was stealing a lot of their transatlantic passengers.
Eagle bypassed the status quo/monoploy of the UK/USA airlines by registering the aircraft in and flying via Bermuda, much to the Government and BOACs horror.
Cunard Eagle Airways was quietly liquidated a few short years later, all the while having made a profit.