Aptera's FAQ Spreadsheet used to show: "Will I be able to disable the passenger airbag for a child in a booster seat (currently six years old, 48" tall, 45 lbs.)?" "Yes."
It has been deleted.
I suspect this is due to the recently-revealed fact that Takata is the only airbag company that will work with Aptera, so they're currently planning on seatbelt airbags.
Don't forget to use "Ctrl+F" (for "Find") to search the spreadsheet (on Apple it's command+F or cmd+F).