bean could you go to work earlier to avoid the traffic - my DH works 7am to 4pm partly for this reason, and I always used to do that too when I had an office job (shifts starting at 6am now - also no traffic!) :o
I agree the whole school thing seems messed up in the UK - if all kids went to catchment schools and all who lived more than a mile or a mile and a half away got a free bus pass, then all children walking to school would be realistic.
I'd bet lots of people would still drive them though, it's so ingrained in people's expectations now. I wonder how many of those driving do live under a mile away ... a lot ...
Part of it is that people don't trust their 8,9,10 year olds to walk without a parent and it is the parent who doesn't want to/ have time to walk them. In most countries those children would be walking in groups or taking a school or regular bus.
More crossing patrols / loolypop ladies/ men and a return to actually going to the local school, and free bus passes for the route to school for those who live more than a mile away would all be sensible - as would people who don't have to start work at 8-9am for any good reason making the sensible choice to start earlier and finish earlier, or start and finish later so that not everyone is travelling at the same time!
More flexibility for more office workers to work from home several days per week would also help...