I take it you've never been driving along and had a pedestrian absent-mindedly step into the road in front of you. That's the kind of thing that engine noise helps avoid. Read some of the other comments on this page.
For what it's worth, most of my travel is on trams - not foot, cycle, or car. Thanks for the patronising comment, though.
What tribe do you think I belong to? I was pointing out that anyone can be negligent.
And seriously: "Yeah, I was being patronising, but don't be defensive about it"? If you can't handle being called on your own behaviour, don't do it to others.
