From the conclusion of It's Walky!: The Meaningful Echo of the former Crowning Moment of Heartwarming "it's the rain" speech, this time given by Walky as The Cheese... who then takes down the entire invading Martian fleet.
Joe and Rachel get one when they, with no resources (SEMME got shut down) and in the midst of a Martian invasion, build a fully-functional spaceship with AI, cloaking and intangibility capabilities out of an eight-year-old SUV. They, Danny, Howard and said SUV (dubbed Ultra-Car) get a second one completely offscreen when they blow up the Martian mothership.
From Joyce & Walky!: Jason getting up when the Head Alien II, blessed with reality-warping powers, has just used his ability to become intangible grow to giant size to apparently kill Jason, Walky, and Joyce. That's right, the non-superpowered one is the first to recover. Even Heady is impressed.