As far as I know Doge is an endless supply coin, how much it can be issued is up to the owner's liking.
If Tesla accepts Doge for payment, it is very likely that a large amount of Doge will be released and buy the entire Tesla.
Even bitcoin is being overturned by tesla and Elon Musk, what future will a coin like doge coin have if he will do it. Don't let their tricks hit the current investment sentiment, after a few market swings I think great drama is still ahead and it won't end simply like this.