I don't understand why the petrol and cooling water have to be drained. It is not clear why something has to be blocked when the car has to be transported. Furthermore, a nice demonstration of a very important invention!
Draining to prevent liquids from sitting there still and rusting internals away, you'd have to drain modern cars too if they're used once a year. Transportation blocks simply rigidly clamp the rear axle to the chassis, taking load off suspension springs (yes it does have springs), so the thing isn't bouncing around and springs aren't stressed when transporting. It isn't designed for the kind of speeds it'll be transported at, and kind of stress that'll happen if the transporting truck hits a pothole, so just a safety measure.
If they just sold the frame, you could easily make an electric version of this. Just have someone build a front wheel with hub motor and toss all the electronics under the seat.
Wenn ich den Sitz wackeln sehe, verstehe ich auch, warum Berta Benz so gern damit gefahren ist. Das ist wie der Ritt auf einer Waschmaschine im Schleudergang mit Unwucht.