I've got about 1/3 of the new shell installed on my trike:
I still need to mount the tail, turtledeck, hood, windscreen, roof, rear wheel cowling, fenders, suspension arm boots, and steering bar side boots, roll bar, among other pieces. With just the middle and front on this trike, the drag is about as good as the entire previous shell I had on it two years ago, and I find that encouraging.
I also have a Leafbike 1500W motor, Sempu 115mm torque sensing bottom bracket, Cycle Analyst v3.1, and other parts in my possession, with a Phaserunner controller on the way. I need to order the battery pack and charger still. I've built up a 26/39/53T crankset with 152mm crankarms and once I install the motor, I will be running a 34-11T 7sp cassette.
This thing is going to accelerate like a car, be able to reach highway speeds, and theoretically/possibly get 200 miles range at 30 mph and 150 miles range at 40 mph with a rider input of 125W using a 21S4P pack of Panasonic 21700s from a Tesla Model 3, all while staying under 100 lbs.