Says as much in the Snopes article
The features are environment-friendly, but the reason for them was practical — to save money and to save water, which is scarce in this dry, hot part of Texas.
As such, we know what Bush's motives are.
In the case of Gore and his preaching, but not practicing, it's most likely financially motivated as well
GIM also owns a 10% stake in the Chicago Climate Exchange (CCX), CCX in turn owns half of European Climate Exchange.This gives Al Gore a financial bias towards promoting global warming control trough the issuing of carbon credits
http://en.wikipedia....stment_Management
