Back in March, we brought you an exclusive look into how Chevrolet's engineers tuned and tweaked, sculpted and simulated to turn the eighth-generation Corvette into a 233-mph missile, the 1,064-horsepower ZR1. But while I'm a racing simulator fan through and through, there's nothing like driving a real car on a real track, and this past week it was time to do exactly that.

That track, the Circuit of the Americas (COTA) in Austin, Texas, is as real as it gets. Host of the Formula One United States Grand Prix since 2012, it's three and a half miles of sinuous asphalt with enough turns to see just how well those engineers sorted the car's handling, plus a long back straight just perfect for letting that big motor really sing.

Staying stuck

COTA is also the perfect place to test out the ZR1's downforce, something that wasn't so much of a factor leading up to the car's record-breaking 233-mph run. More downforce means more grip, which is always nice, but it usually comes with the penalty of aerodynamic drag.

That's one reason why there's actually two different ZR1s. First is the base model, with just the (relatively) petite spoiler on the back of the trunk l …

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The skies around Dallas are about to get a lot more interesting. No, DFW airport isn't planning any more expansions, nor does American Airlines have any more retro liveries to debut. This will be something different, something liable to make all the excitement around the supposed New Jersey drones look a bit quaint.

Zipline is launching its airborne delivery service for real, rolling it out in the Dallas-Fort Worth suburb of Mesquite ahead of a gradual spread that, if all goes according to plan, will also see its craft landing in Seattle before the end of the year. These automated drones can be loaded in seconds, carry small packages for miles, and deposit them with pinpoint accuracy at the end of a retractable tether.

It looks and sounds like the future, but this launch has been a decade in the making. Zipline has already flown more than 1.4 million deliveries and covered over 100 million miles, yet it feels like things are just getting started.

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