Protection for bike on trunk mounted car rack?

[fabiosav]

Colorado cyclist has a thing to protect your bike during roof mounted transport. Any thoughts on how to protect a bike facing sideways with a trunk mount? I have a Cycleops computer hub, DuraAce and other gear I would rather not have trashed… How have you protected your bike? My first time using it (a Rhode Gear SuperShuttle 3) and I'm obsessing...

thanks!