Get your mind out of the gutter, you massage-parlor denizens, we're talking about cargo space. Actually, it's the Clever End, and it's the equivalent of roof-mounted storage for the diminutive Smart Fortwo. The Clever End is mounted in place of the Fortwo's rear window, and acts as an aftermarket trunk (sorry, boot).
The Clever End [via Autoblog.it]
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