The Tokyo motor show, once one of the most powerful and fabulous auto extravaganzas on earth, seems to be on the ropes.

Like Geneva, Frankfurt and Detroit, Tokyo has long been on the A-list show circuit but this year persistent, nagging rumours have dogged the show.

Would it still go ahead in October as planned, given the ongoing world economic meltdown and big local competition from Shanghai? And even if Tokyo did get the green light, who would show up?