No, I think that what we have here is an excellent start. Pratically every species of animal can be tied back to a given model of car. When they decided to use the Road Runner, did they say "Wait a minute, do we want to use a bird when there is already a Thunderbird" - Obviously not. At least if someone did say that someone threw a shoe at them or something. The Cheetah represents what we were going for here in so many ways - It is PUUURRRRRRRFECT.