Fair enough, from my personal experience both in car and on buses, the congestion charge has done nothing to assist my daily commute, and could actually probably be considered to have negatively affected it, as I go up Tower Bridge Road - the south eastern boundary of the CC, so does all the other traffic that might otherwise have gone over London Bridge, Southwark Bridge, Blackfriars Bridge etc thus extending my journey time.
I won't use the tube during the rushhour because it's too overcrowded, a 2 wheeled option (powered or unpowered) is not an option either for various reasons.
Apart from the fact it's an unnecessary and unjustified blanket tax not taking into account anyone's ability to pay - or need to use a car in Central London - for the reasons above, I consider a congestion charge to be a bad idea.
Of course, as I'm unlikely to ever be driving in Manchester it doesn't affect me, but as the request was for how it has affected Londoners, my answer is, I believe, justified in voting against introducing such proposals elsewhere in the country.
Happy now?