The interior of the Widow’s Walk will feature large pieces of chromed steel from old Cadillacs.  Both these and the Widow’s Walk will be attached with as few holes into the roof as possible.

It will be quite secure with redundant bracing throughout.  Unfortunately welding isn’t much help because the Honda roof’s steel isn’t thick enough (and I’m not 100% sure it is still as it doesn’t provide a ground).

Once all of this is attached, I’ll add a garden on top so greenery will be amongst the chrome.