Welcome to Law.com Class Actions: Critical Mass, a weekly briefing for class action and mass tort attorneys. 

This week: Beasley Allen's Clay Barnett talks about this month's rare class action verdict against GM. As lawsuits grow over Merck's Gardasil vaccine, a federal judge on Tuesday appointed a plaintiffs leadership team. Find out who defendants like Amazon and Google have retained in privacy lawsuits over "session replay" software.

I'm Amanda Bronstad. Feel free to reach out to me with your input. My email is [email protected], or follow me on Twitter: @abronstadlaw.

Trucks come off the assembly line at GM's Chevrolet Silverado and GMC Sierra pickup truck plant in Fort Wayne, Indiana, U.S., July 25, 2018.

About That $102.6M Class Verdict: "GM Had Calculated The Amount"

A San Francisco federal jury awarded $102.6 million in a rare class action trial involving owners of GM trucks suing over defective piston rings that caused excessive oil consumption, which led to engine breakdowns.