Looks can deceive.
For one point: the automobile company from which this drawing emerged, and what it was supposed to portend.
Only a complete and specific answer will earn a point!
If you haven't registered yet, you need to do so in order to reply. You can do so by clicking here (http://www.autopuzzles.com/forum/index.php?action=register).
If you have not done so, please familiarize yourself with the AutoPuzzles Rules (http://www.autopuzzles.com/forum/index.php?topic=6857.msg44401#msg44401) before attempting to solve this puzzle.
This rendering was to have been Virgil Exner's choice for the front styling of the 1960 Desoto. It never went into production.
My first impulse was to search for Pontiac Tempest design renderings, and indeed I spent some time looking there, before I noticed the "drooping lip" grille/bumper and its similarity to the '59 Desoto...
I have a different answer, though this did come from the studio you've identified.
Upon further research, it seems you are right, and my book is wrong. Point for you!
Thanks for the chance to discover a new webpage. It's easy to stagnate without some kind of challenge.
The more you shoot at my feet, the better my dancing gets ;D