The true cost of free shipping

It's easy to see why online shopping is so popular. Just a couple of clicks and that new pair of socks is winging its way to you at breakneck speed. And they can get it to you in two days for free? Click.

Kroger to test grocery deliveries with driverless cars

Kroger Co. is about to test whether it can steer supermarket customers away from crowded grocery aisles with a fleet of diminutive driverless cars designed to lower delivery costs.

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