Didn't know this was in the works.

Here's the director talking about the cars in it.

Two Mad Max flicks...

The new sequel/remake/reboot/whatever-it-is of Mad Max that director George Miller has been talking about forever is finally happening, and it sounds like we might have another sequel coming whether the first one terrible or not. Twitch has heard the new film--which, beyond all logic, stars Tom Hardy and not Sam Worthington--will be followed by another chapter that's shooting back-to-back....

...

http://www.iwatchstuff.com/2010/07/hey_we_might_get_two_mad_max_m.php