Definitely. I've cycled in London for a long time (though I'm slightly out of town now) and depending on the time of day, it can be the fastest way to get acros

Definitely. I've cycled in London for a long time (though I'm slightly out of town now) and depending on the time of day, it can be the fastest way to get across the city. There are a few factors to consider. There are places you can go by bike that aren't always available to cars (cycle paths through parks, for example). You'll get from the exact starting point to exact finishing point. And general congestion will take care of the rest. In a slightly different way, where I am now, the fastest way to get to work is to cycle 20 minutes to a more convenient train station and take the train in. The alternative is a) much less reliable and b) takes an extra 45 minutes (minimum).