

“Millions” is cheap in car making. It buys you just enough design for manufacturability to make it good enough and cheap enough for people to buy.
Less design -> worse result while more expensive to produce. Example: Podbike (I like it, but the price)
I’ve owned several recumbent trikes like that one, all of which lifted the inner wheel in sporty driving below my preferred speed.
At which sideways acceleration will Aptera roll over? A heavy battery between the front wheels will help somewhat.