In Which I Attempt Too Much Dimensional Analysis

I did my best with the research for not having a lot of time. I made the assumption that number of passengers doesn't affect fuel economy, but this shouldn't significantly skew results. And, uh, yeah, of course cycling came out on top. I assumed that the cars (except the Leaf) ran on unleaded and the other vehicles (including the 747) on diesel; the Person-MPG equivalents were all calculated using unleaded.

Mode	Efficiency (kJ/km*person)	Person-MPG equivalent
Hummer H2	9036	10
Ocean liner (Queen Elizabeth 2, fully loaded)	6170	15
2011 Toyota Camry (1 person)	3475	26
LRT (Minneapolis, estimated)	1766	51
2011 Toyota Camry (2 person)	1738	52
2008 Toyota Prius (1 person)	1632	55
Bus (average occupancy = 9)	1577	57
Boeing 747-400 (fully loaded, maximum range)	1120	81
2011 Toyota Camry (4 person)	869	104
2008 Toyota Prius (2 person)	816	111
Nissan Leaf (1 person)	768	118
2008 Toyota Prius (4 person)	408	222
Nissan Leaf (2 person)	384	236
Bus (full)	355	255
Running (16 km/h)	267	339
Walking (moderate speed)	205	442
Nissan Leaf (4 person)	192	471
Cycling (16 km/h)	110	823

Sources:
https://en.wikipedia.org/wiki/Fuel_efficiency_in_transportation
http://www.brianmac.co.uk/energyexp.htm
http://www.coyoteblog.com/coyote_blog/2009/08/light-rail-uses-twice-the-energy-as-driving.html
http://boeing.com/commercial/747family/pf/pf_400_prod.html