A self-driving car doesn’t fit the bill? Tough audience. 
But what are you looking for? Something other than 4 wheels? Something other than a seated position? No windows? No headlights? No safety belts? No doors?
Sure, you can do those things, but they would likely be dismissed as gimmicky.
I suppose you could have the passengers facing each other, front to back like a train car, but this is a small 2-seat commuter, 2 people facing each other can be awkward.
I would like the seats to recline enough to nap, other than that, there easily could be a tray (like a plane) for my computer/book/food/whatever or a head-up display. But showing a tray is not something I would call innovative, neither would be a head-up display.