I currently drive a 2015 KIA Rio and will likely be in the market for a new vehicle by the time the 4 wheel sedan version of the Aptera comes out. I would like to know if the sedan will be much more expensive than the base 3-wheel model. I've been currently waiting on the future Tesla $25 000 model, but if the Aptera Sedan is more affordable, would definitely consider it. Also, just out of curiosity, will the final version of the sedan have front fender skirts? One version shows it with front fender skirts, the other shows open front wheel wells. I realize there are engineering challenges that come with front fender skirts (preventing the tires from rubbing against the skirts when turning sharply, etc), but they look so cool, notwithstanding the aero advantage.
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Using wheel motors, remember that it is possible to turn the car without turning the wheels - using tank turns. They could certainly do this.
Please, look at this page because of the design
https://www.aptera.us/forum/general-discussions/news-for-sedan
Non-steerable wheels, doing "tank turns" would be very wasteful (of energy & tires), so not likely an option under Aptera's philosophy.
passively actuating camber (https://www.google.com/search?q=wheel+camber&rlz=1C1CHBF_enUS844US844&oq=wheel+camber&aqs=chrome..69i57.4079j0j1&sourceid=chrome&ie=UTF-8) according to steering angle and rear wheel steering may help with weight distubution balancing and handling corners and minimizing tire wear (like in 2 wheel motorcycles), maybe the steering radius of each wheel can be decreased with all wheel steering, norrowing the wideness of teh car (aptera is very wide) thus making up for the increased mass in shorter steering linkage arms, improving aerodynamics possibley too. with less moving angle of rear wheels, maybe the wheel can be tucked in between driver and passenger? Aptera is pretty long too, and decrease size is decrease mass/weight for costs effency etc.all wheel drive is there to possibly have more steering rotation if car with less steering angle at the front for a narrower car(b/c its too wide for some places) less steering angle allows less wind drag at some level too.