America's biggest companies are sounding the alarm on a crisis plaguing the trucking industry

Truck drivers are increasingly scarce. On quarterly earnings calls, several executives have described the pinch of rising costs, and how their businesses are being impacted.  Even Amazon cannot escape the woes plaguing the trucking industry.  The retail juggernaut, loved for Amazon Prime, its free two-day shipping product, announced last week that it would increase the price of an annual membership by $20 to $119 for US customers.  Brian Olsavsky, the company's CFO, cited higher...