"Not only did Berkshire bite, sinking $340 million alone, but so did insurer Progressive Corp."

"The company was supposed to use the money to build mobile generators, which supply power at sporting events and other outdoor venues. But evidence suggested DC Solar “engaged in nearly no legitimate business,” the government said."

This is uncharacteristic slip of Berkshire Hathaway, isn't it? I am surprised.

Can anyone recall when (if) Berkshire Hathaway invested in a Ponzi scheme before this?