Serious but funny product concept:
A trailer for your 700 hp Lamborghini. Titanium frame, ~60-80lbs weight empty. ~500lbs carrying capacity. Very light and minimalist. Design and construction in the pattern of high-end bicycles, like downhill racing bikes. Basically an open-top simple cargo trailer, could carry some personnel chariot style, standing up. So, a nice mountain drive in the style of ancient charioteers. Two men in the trailer, open to the mountain air whistling past 100+ mph.
Or, it could be use to haul camping supplies through the mountains. So then a tiny sports car could be used for grande-turismo, with a few hundred pounds of camping gear in the back. ~300 lbs gross weight for the trailer isn't going to much compromise the car's handling, add in negative camber for trailer wheels for handling.
Single axle obviously. A chariot basically. Can ride standing up. Like out of mountain bike materials and build process.
Just a thought.