[ZenGum]

Given that there already is a whopping tax on petrol (what is this "gas" that your cars run on? is it environmentally friendly?), installing tracking devices to tax per kilometer seems massively inefficient and intrusive. Just jacking up the fuel tax would more directly hit those who are least green (which is the supposed objective) without wasting heaps of money on GPS gizmos which, I feel sure, someone is already hacking.