This describes my BMW i3-REx on a small scale: Not on the market yet, the SCOUT sounds like an upscale version of the BMW i3-REx. Then there is my daydream. Eventually the Model 3 battery will reach a point where cross country travel becomes impractical. However,, the range extender and generator are at the same voltage, 400 VDC, as the battery pack and designed for AC isolation (i.e., battery short to case protection.) In theory, a light weight, Harbor Freight trailer could carry a 'modified' range extender engine and "one of" connector behind the Tesla. Giving 300 mile gas range to the Tesla makes it nice, serial, plug-in hybrid with an autonomous power capability. Done right, a portable, gas fired, medium speed, 25 kWh, DC charger. Bob Wilson