[RiderOfGiraffes]

Does the author actually mean "Pedal to the Metal" ? The original saying comes from pressing the gas pedal as far as it goes, until it presses against the metal underneath and can go no further.

I've never heard to "Pedal to the Mettle" ...

[baddox]

"Mettle" means willingness to succeed or endure; standfastness. I'm assuming the title is just a pun.

[RiderOfGiraffes]

Ah. I was aware of the meaning of mettle, I was just unsure if it was deliberate. It's a nice theory that it's a deliberate pun, but I'm not sure it works. It feels the same as "The proof is in the pudding" and other, similarly meaningless distortions of old adages that made sense in the original.

But still, nice idea - thanks.

[lunchbox]

It's actually "The proof is in the putting", where "putting" refers to putting the pedal to the metal ;)

[baddox]

I thought the proof of the pudding is in the eating.