Wow, look what I won:
Mega Drive - Virtua Racing - Vorführmodul

Looks real for me. The Lable looks a bit like photocopy, but the board is smaller (I think, because on pictures I have see, that the normal cartridge is much bigger) then the released version and this is small like normale Genesis games. So I think they have not make good lables for Promo Cartridges. Now I wait, till I get it and look, if this is different to the released version. Its a convention or exhibition Cartridge and smaller, so I hope its maybe different.