UK's Carbon Card Scheme

Many members of the UK Parliament is still kicking around the idea of a "carbon card" to oversee its citizens. The idea is to ration energy usage (flights, driving, energy usage at home) each person can use. If the citizen goes above this amount, he would be required to pay fines to do so. (Think: McCain's cap and trade system for individuals.)

I can think of no quicker way to quickly eliminate individual liberties.