Lately I've taken to browsing at Flightaware.com, looking up smaller air cargo feeder operators, but tonight I stumbled on Lufthansa .... about 18 flights in the air to/from the US... including flight 413, Newark to Munich in a 737-700. I always figured that these "long" flights were made in comfort, 767s 777s 747s, A330s A340s, etc.....
But when you think that the basic fuselage of the 737 is that of the intercontinental 707, and today's engines are more powerful and efficient...
That's what I get for thinking that a DC-3 is a "large" airliner.