We've asked Tesla if it can say why the 60D is leaving a mere 3 months after it made its debut. There's a chance (however slim) that it could tie into the company's looming October 17th event. However, it wouldn't be surprising if the starter Model X occupied an awkward middle ground and just wasn't selling as well as the company liked. After all, frugal buyers (relatively speaking) are more likely to skew toward the Model S 60, which starts at $66,000. If you can afford to spend thousands of dollars more for the X, why not splurge on the longer range of the 75D? Tesla wants to deliver more of the EVs it makes these days, and that likely means scrapping any vehicles that aren't strong sellers.