Actually, I can imagine a likely justification from some of the younger folks in Nissan's marketing and product planning groups. Expressed in American English, words such as "edgy," "funky," "provocative," "postmodern" and "countercultural" and others might have been bandied about conference tables or infested emails and memoranda. For the Juke seems to have been slotted into a market segment of young buyers with just enough extra money to indulge themselves with a vehicle that makes a statement.
I'm note sure how large this market might be, world-wide, but Nissan hedged its bet by building the car on the Nissan B platform shared by a number of other Renault-controlled brands including the Nissan Leaf electricity powered car (which has a slightly longer wheelbase than the Juke).
From the standpoint of the arts, I find the Juke interesting in that it strikes me as being yet another dreary symptom of self-indulgent, cultureless faux-creativity of this "postmodern" era that we must endure.