> If you are in your 50's then you must be one of those boomers who was a prototype for the Millennials. You appear to be as confused about calendar years as you are about physics and electric motors. I'll let you figure out how old boomers are whenever your skills reach the point that such learning becomes possible. > hen there's the speed controller. Fragile, not repairable, and inefficient. You know what a heat sink is, right? A heat sink is the huge metal fin set that's there to dissipate heat from the resistors. All this stuff fragile, inefficient and not repairable. And yet, somehow they're still less expensive to purchase and operate. Strange how something more prone to repairs has lower maintenance costs, and something more inefficient has less operating costs. It's almost like they defy the laws of supply and demand. Miracle engines they are, I guess. > They have all the basic parts of real cars, plus a bunch of additional parts. LOL. I can't tell you how many times I've had to rebuild the heads on my electric motors. Those Tesla lifter rods suck. If you think those suck you should see how hard it is to replace the thrust bearings on a Chevy Bolt's crankshaft. It's like, "why did I even go electric when they have all the same parts?"