That's an interesting thought. When parallel parking a 4-wheel car, you can see the rear tire in the side mirror to see how close it is to the curb, and then you can infer where the front tire is since it's in line with the rear tire. But in a 3-wheel vehicle, you'd have no such visual aid (assuming you can't see the front wheel directly). I wonder if they could put proximity sensors in the front wheel covers to help with this.
Possibly even more relevant, though, is the kinda-shocking width of the Aptera. The overall width is published as 88 inches. In comparison, the Model 3 width is 73 inches without mirrors, 76 inches with mirrors folded, and 82 inches with mirrors extended. At 88 inches, I'd only have ~2 inches clearance on either side when trying to get through my garage door opening.
When parking on the street, even if you were able to get the Aptera as close to a curb as a conventional car (which could be difficult since you wouldn't want to scrape the wheel cover on the curb), the street-side wheel will stick out awfully far. Granted, the portion sticking out will be down low, and the widest point on passing cars (their side mirrors) could pass over the top of it. But still, it might look weird with the wheel cover protruding out so far. (Although "weird looking" will be kind of a given with this car in a lot of ways.)