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This Week at Treehugger: we get our first lesson in plug-in hybrid anatomy; we ogle over a 157 mpg German diesel called the Loremo AG; Mitsubishi is hard at work in the lab developing bamboo-reinforced bioplastics for their car interiors; hybrid sales continue to rocket upward; a look at the politics of car air conditioners and climate change; and, oh my!, Hummer can t seem to stuff enough money into any band s pockets to use their song in an ad. Oh, but why not?

[Treehugger's Perspective Shift column appears every Wednesday in Jalopnik. Due to the Geneva show, it's running on Thursday this week.]