New tires mounted on some serviceable Civic HX wheels I had in my basement were good for 2.3lbs on each corner. Not as much as I was expecting! Also not the prettiest, but I don't suppose they'll be seen often.
I was fascinated by Basjoos' front cover setup. The wheel covers are attached with hinges, and held against the car with springs. When you turn the wheel, it rides up on conveyer belt rollers.
I can't promise I'll make quick progress, as I have another car I need to restore before a deadline, and I'm doing some major renovations on my house, and Aerocivic may be several weeks at least before I can even put a tag on it.