Your argument is like claiming that a private jet is more economical than a 747 jumbo jet, because it burns less fuel. Energy consumption per transaction is what really matters, and Bitcoin really sucks there.
The anti-car movement is truly insufferable, because, at least online, it seems it's mostly spearheaded by people from Europe who have never seen how spread-out America is. I'm not about to bike 30 miles each way to work every day, rain or shine, and yet I get looked at as the villain for suggesting people stop going outside when the weather sucks.
Rant over. I hate people.