I read about some folks concern, in a city environment, that when parked the front wheels may be vulnerable to a strike by a passing or adjacent parking vehicle... Maybe these “half-baked ideas” could lead to solutions ... “if this is an issue at all”....
When parked place a simple ( day or night reflective) traffic cone on the ground adjacent to the vehicle, behind the wheels(s) near the tail
Any collapsible type cone would be compact and light and easier to store
If you need to go with with something electric ( battery powered) outdoor device there are numerous battery powered solar charged and USB plug in lights, strobes and audible gizmos
I personal would not want to annoy people with annoying stuff
I wouldn’t want to have anything on the vehicle permanently that would impact its beautiful aerodynamic finish.
The amazing look of an Aptera will make people ”take note”!