A tadpole trike configuration would allow for the weight towards the two wheeled end for maximum stability, and the making of a very aerodynamic shape. With the tadpole configuration, you could pack a sh*t load of batteries between those front wheels, and shape it to get a low drag coefficient, with two riders riding tandem in back. The safest way to propel a 3 wheeled vehicle in a tadpole configuration is with the power driving the front wheels, especially in turns. If driven from a single rear wheel, in tight turns the back tires pushes on the wheel on the outside of the turn. The Slingshot and Can-Am are perfect examples of how not to make a 3 wheeled machine. Looks like Aptera is back, only in electric form.