Airferries - presumably to show us that SEN will have a train station from Dec 2010.
I guess jetstreamtechrecords wants to spread rumour....but were it to become reality and ticket prices were greater than say £40 each way it would last about a week. LCY works because of it's proximity to the city, and via tube, even the West End. SEN is in travel time much further away than LGW.