From this photo it looks like neither car or dog is very happy about the situation although the dog is tolerating it quite well. It's a bit sad that your other cat didn't survive, I can't imagine dying from dog bites is a nice way to go, but at least you have the multi-named cat you have now and he seems to know how to defend himself which is good.
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Haha. You're right. They get along but not so much as to pose for a picture voluntarily.