I think Elon Musk's hint should be taken seriously because Elon is an influencer in the crypto space. Those who know the role of 'hype' in the crypto space and if such hype is to take place during this bull run, those holding Doge coin may make real profit. Doge coin is currently occupying number 9 (nine) on the Coinmarketcap, indicating it as one of the oldest, strong meme coin in the crypto space. In my point of view, holding Doge coin in anticipation of Elon's plan to use it for Tesla car purchase could be worthwhile.