When I first heard that a vacuum company had released a rocket-powered electric vehicle with physically impossible-sounding performance specs, I immediately thought James Dyson was up to his old tricks again. Fortunately, I was wrong. This time the household appliance company trying its hand at super car design is Dreame (pronounced like “dreamy”), a little-known Chinese firm that has grand ambitions to become a global consumer electronics giant. The company held an expo of sorts in San Francisco this week that resulted in a flurry of product announcements. And because we live in an attention economy, and one of the best ways to grab people’s attention is to show off a ridiculous looking car , Dreame is doing exactly that. Again. The first time was last January at CES, when Dreame displayed a four-door concept car with four electric motors capable of putting out 1,399 kW of power (that’s 1,876 horsepower) and accelerating to speeds of 100km/hour in 1.8 seconds.…