After a year pass, now only i've manage to fill the display with die-cast. Wasn't sure what to put in then. Got this Hot wheels display case from a Collaboration Contests that runs at Toys R Us with Mattel in 2009. Contest rules were simple, to registered for the contest, spend over rm30 in a single receipt with hotwheels products and be a "Star" card member. After that, the top 20 highest spending "Star" card member for hot wheels products (during the contest period) will wins the display case. Easy as 1-2-3 :). Will probably rotate the cars display once every few months or years.
The original promo posters is as below. Click to enlarge.