I'm a fairly fit person and I am not going to run for an hour twice a day. 30 minutes by bike is fine but if I am gonna get on my bike I might as well go all the way to work which is what I do. Public transport is just no use to me until I move somewhere with better access.

You must be in incredible shape. Biking at an average of 24 km/h for 30 mins twice a day is not that easy. Same for your running times.

Here's a link for reference: https://goo.gl/maps/qTq3CfWFUrm (not my exact address, nearby intersection)

Having done that route in a car and on a motorcycle, I can say that Google is being a bit optimistic about the cooperation of traffic lights and the safety of traffic.

Wtf? Running 9 miles in an hour is under 7 minutes per mile. That's a very high level of fitness.