[Osem]

It seems to me that if such lanes were going to be used temporarily for a major event like the Olympics, that might be worthwhile providing that the useage would be substantial and costs of so doing aren't ridiculous. Having said that, with all the hoops, red tape and regulations applicable to such things I wouldn't be at all surprised if it'd turn out to cost hundreds of thousands of pounds and wind up being used by a very select few people.