Heavy-lifting blimp from DAI
A Canadian company is buying innovative blimps that can lift 50 tons and travel to the frozen north at 100 knots, staying aloft for several weeks at a time. Hybrid Air Vehicles from the UK will be supplying the first of several by 2014 to Discovery Air Innovations of Canada (DAI). It looks like a science fiction movie but it's real.
A little background on the topic here and here. All-weather gravel roads in the north can cost over $1.5 million per mile.