BMW hints new Isetta - Massive Balls or Vaporware Bullplop?

Auto Express, UK's awesome car weekly is teasing us with a possible new Isetta from BMW. Like the New Beetle, New Mini and new Fiat 500 - it's another everyman car that history loves. Of course, like the other fake retro econocars - the above drawing seems to have door handles on the side. Already not very Isetta. But the rear-engine design will be retained (in this fantasy, might never happen scenario.)

Auto Express is telling us to wait until 2010 to hear more. They also raise the interesting point of the Isetta not really fitting into Bimmers 'Ultimate Driving Machine' thing. As gas prices keep skyrocketing like bastards in the U.S. - can new, tiny cars like the Smart, Fiat 500 and this thing be the future?