Lamborghini Sian Roadster is completely topless. Instead of building a convertible, Lamborghini opted for no roof at all. Source 1w.
I guess you can only drive it during sunny days. Doesn't make much sense to me.
TIP: Press above button ONCE only. If you come back here via the [Back] button on your browser then you will need to click [More Options] button (below) first in order to re-enable your ability to Post.