Friday's Fast Five: Week of 5.27

The Fed's $2.7 trillion mortgage problem (Axios): The Fed will face a series of political and economic headaches as it attempts to move away from subsidizing home lending by shrinking its portfolio of mortgage-backed securities.

The Stock Market Has Avoided a Bear. But the Selloff Isn’t Over. (Barron's): The S&P 500 index refuses to fall into a bear market—but that doesn’t mean it’s found a bottom just yet.

Should You Waive Rental-Car Insurance for Your Road Trip? (Wall Street Journal): With the cost of car rentals and gasoline near record highs, you might be tempted to opt out of pricey liability policies. Insurance experts weigh in on whether that’s a good idea.

Company insiders rip Tesla’s stance on safety in hard-hitting Elon Musk doc (Los Angeles Times): Premiering Friday on FX and Hulu, the 75-minute fright show spotlights the persistent dangers of Tesla’s automated driving technologies, the company’s lax safety culture, Musk’s P.T. Barnum-style marketing hype and the weak-kneed safety regulators who seem not to care.

Industry heavyweights unite in U.S. battery push (Axios): Auto giants are joining with battery companies, EV startups and lithium producers in a new coalition seeking stronger federal support for building a large U.S. battery supply chain.