Elon Musk in a cowboy hat and sunglasses in a celebratory pose
Tesla CEO Elon Musk
  • Ross Gerber praised Tesla's battery advances after touring the Austin Gigafactory this week.
  • In particular, he noted the footprint for production of the 4680 battery has come down in size considerably.
  • "So the 4680 cell is probably one of the most important technological advances in modern history," Gerber told CNBC.

Tesla investor Ross Gerber took time to praise the electric vehicle maker for what he saw as powerful production advances.

After taking a tour of the company's Gigafactory in Austin, Texas, he tweeted that what he saw was "pretty insane."