When I was viewing some of the Jukes on the shop floor they had a tray under the boot cover, that was deep and had 2 compartments on either side, lift that up to reveal the spare wheel kit. Just wanted to confirm this tray , is this standard on an accessory? I cant see it to buy on the Nissan site, they do have a tray but the description is quite vague and the picture looks nothing like what I saw.thanks in advance.