I mentioned a year or so back reading that a bicycle is the most efficient means of transportation.

I found the list I got the info from. From Nov. 25, 1981. I don't remember where I got it from. It may have been from one of those papers... National Enquirer or Globe.

Anyway, here is the list, from least to most efficient...

Helicopter
Large car
Train (regular)
Airplane
Train (electric)
Bus
Small car
2-level bus
Broad-gauge train
Electric bicycle
Bicycle