This is sure to enhance Cycling to Work a whole new experience and improve the whole experience of biking in Singapore!
Fingers cross and hope this would happen soon! *
"Whenever I meet someone who finds out that I work on the directions team for Google Maps, the first question I'm asked is often "So when's Google Maps going to add biking directions?" We're big biking fans too, so we've been itching to give you a concrete answer. I don't want to keep the good news a secret any longer, so the answer is: right now!
Today we've added biking directions and extensive bike trail data to Google Maps for the U.S. My team has been keeping close tabs on all the public support for biking directions that’s been steadily coming in, but we knew that when we added the feature, we wanted to do it right: we wanted to include as much bike trail data as possible, provide efficient routes, allow riders to customize their trip, make use of bike lanes, calculate rider-friendly routes that avoid big hills and customize the look of the map for cycling to encourage folks to hop on their bikes. So that's exactly what we've done.
Let's say you want to bike to work, or maybe you want to drive less and spend more time outdoors. Biking directions can help you find a convenient and efficient route that makes use of dedicated bike trails or lanes and avoids hills whenever possible. "
Extract from: http://googleblog.blogspot.sg/2010/03/biking-directions-added-to-google-maps.html