This seems to be a non-issue. Here's a thread from a couple of years back when petrol prices went up to about £1.20+. 97 posts and a conversation that kept going.
http://www.oople.com/forums/showthre...t=petrol+price
This thread's been revived three weeks ago, and so far 14 posts. Seems people are happy to pay the prices and use their cars, or not pay the prices and not use their cars, but they don't care enough to make a fuss. Interesting...