I have the solution. We just need a gene therapy that will make us capable of photosynthesis. Then we can skip the intermediate stages and not have to eat at all. Throw in some cheetah genes so we can run real fast and we won't need cars.

Nah, we should just take Alice’s magic potion and become 1/10 th of our size. Then we’d only need 1/10th of the oil we consume today. Oops, we’d have to shrink the world as well to cut down transport ...oh, then we’d be shrinking the oil fields too, oh dear, back to the drawing board! Something will come up!

No, No. I think you have something there. Small, photosynthetic, and fast.

Once it goes transgenic in the wild we'll have ... Triffids!

That really would serve us right!