A slide from a Tesla presentation that recently surfaced was interpreted by many market participants to mean a delay in the launch of the Model 3, the "all-electric vehicle for the masses (at $35,000).

Tesla swatted down speculation of a delay, saying the Model 3 was on track to be shown in 2016 and for production to begin in 2017. But rumors of a possible delay shine light back on the Model X, the "hump" vehicle launched between the current Model S and coming Model 3, responsible for carrying the torch for sales in the next few years before the Model 3 is available.