The hype around delivery robots has fizzled, but DoorDash is still determined to launch Dot, an adorable red bot. It can ride on roads and in bike lanes, where it will face daunting challenges. When ...

Courtney doesn’t have eyes, but it’s got sensors everywhere. There are two blinking lights on the front of its boxy body to approximate wide, moony pupils. It’s been described as a “large cooler on ...