The elephant hiding in the middle of the room is use case. A vehicle design to any end other than high efficiency at low speeds with require accommodations to a greater or lesser extent.
In this case 'ideal' is a local maxima.
edit: Here's an example of an AI optimized use car — Supercar
A.I. Designed this Car
Were this a three passenger/center drive car, I'd call it a worthy successor to the Volkhart-Saggita V2, which was really hard-pressed as a 4-passenger vehicle.