“The esthetics of Cyberpunk are incredible btw,” Elon Musk casually tweeted yesterday, and CD Projekt’s stock soared 19%, in its highest increase since June 2015. The company’s trading volume nearly reached six times its three-month average, according to Bloomberg.

Overall, the shares of the company have grown more than 40% in four days.

Elsewhere in the same thread, Musk said that it would be possible to play Cyberpunk 2077 on Tesla’s Plaid Model S, which is shipping next month.