Rail Link
The recent report and comments by easyJet Commercial Manager Neil Slaven very specifically talks of a rail link. His comments were "There is definitely possibility of a mass transit rail link between the station and the terminal"
In addition an airport spokesman said "We are examining all possible solutions to create a permanent fixed link between Luton Airport Parkway and the Terminal building.
This appears to suggest a rail link pure and simple. Any other ideas like the Emirates Air Line are I suggest pretty fanciful.