I wanted to write about GM, because it's such an iconic American company. My initial thought was to try to write an inside account of how this mighty corporation tries to get out of the fixed event. It did establish some contact with GM. What was especially interesting about the vault to write about is, in some ways, the technological challenge is the least of what they're doing. In order to make this car GM has basically had to shred the rulebook for car making. They're breaking all the rules. Not the first time they've done this - you can come back and talk about the Saturn. Some other things.