I think you should never say 'most funnest' again.
In regard to the topic, it's just a silly little car in my opinion. What people find to be fun is solely based on personal preference. Some people like big, heavy tanks. On the other hand, some like tiny cars, such as the Carlton.
I'm somewhere in the middle. Give me a good, old fashioned Japanese coupe and I'm quite content.
Also, the fact that the Carlton is a standard model makes it that much more unappealing to me. I'd rather sacrifice individualism for a better looking, more customizable car, let alone one that isn't the size of my lawn mower.