Will the optional speakers intrude into the cabin space?

@Kerbe #12705 the advertised speakers can include bigger speakers too. a structural piece can hold a large speaker (like a subwoofer) in between the walls of teh car body via a screw to lock device like used in wrenches. such can be used for any accessory including as clamp down phone holder like device:https://www.aptera.us/forum/main/comment/6031daa3b24694001774f006

speakers can stay attached like built in speakers would, and part of attachment can be charging ports via a adapter where you can add USB ports to the adapter when u buy a extra device u want to charge or connect to without Bluetooth. to prevent wires between foreign devices from clinging onto things, any string, rope or zip tie can keep wires attached to frame. although this may seem as "cheap" simply b/c its not normal among stereotypical "luxury" cars, it can be marketed as "minimalism" which is very trendy nowadays (worked for tesla), and also marketed as a "stripped down race car" look (which would be unique at this price range). https://www.aptera.us/forum/aptera-design-discussion/marketing-ideas

also given cost cutting, i think a lot more people will value this than not b/c people have tight budgets especially nowdays while audiophiles are uncommon and usually use fancy carry on earphones in one ear while driving.