Even supercars, like the upcoming Pagani C9, need gas. All the easier for spy photographers to catch your never-before-seen gullwing doors. Full gallery below.

As much as we've loved the Zonda F, we're excited about the prospect of more. And "more" is coming by way of a smaller AMG-sourced twin-turbo 6.0-liter V12 sourced from the SL65 AMG Black Series. Hey, it's not like 7.3-liter AMG V12s grow on trees. Horsepower is expected to near the 700 HP mark, giving it more oomph than either the Zonda F or Zonda Cinque.

In an effort to help the monster breathe better there appears to be a larger, updated front clip and big gaping intakes behind the cabin. It does retain the same essential Zondaness we lust after but with one big difference: whereas the Zonda has conventional doors this appears to have Gullwing doors. Hmm... Gullwing doors and a Benz engine?

As the sticker says "GOVERNMENT APPROVED HIGH SPEED TESTING VEHICLE." Yes, and JALOPNIK APPROVED as well.