Quoted from toyotaboy:
I was just watching american pickers last night, and they brought up a fact that Dillinger wrote Ford a letter, thanking them for building a fast car so he could watch the other cars (police) fall behind you. I thought that was hilarious!
Fake, wasn't his handwriting.
About a month later Clyde Barrow sent a similar letter, though the writing on that one looked more like Bonnie Parker's writing.
LTG : )