in there it stated a car no matter what its value is a liability not an asset. As long as you have it, it will take your money from you and you will never get out of the "rat race". Dude if you sell it, i'm sure in 5 years from now you will be like "damn the money from that z really helped me." Instead of "damn I wish I would have sold the z instead of putting even more money into it.
The z will always be around, there will always be clean ones around, and they will always put a hole in someones pocket. Take this as you will.