thanks for the responses. We live in a fairly quiet street with little through traffic - but perhaps the occasional car passing through is actually more dangerous to a cat than a constant flow of traffic. There are lots of cats in our neighborhood though and I haven't heard of any other traffic...
We have two cats, Marty and Taylor that we've adopted as kittens a year ago, they're from the same litter so they've always been playing together and we've never seen any hostility. Taylor got hit by a car about a month ago and he sustained several serious pelvic fractures. We put him though...
