Michael,
Ich hab' mein Freund Steve gefragt (der mit der BH). und hier ist was er gesagt hast:
"I found mine brand new on ebay for about $65 shipped. It's made by Colgan.
There is a lower portion to it but I've never figured it out how to keep it on the car. The part that I have on the hood would fail any autobahn test.
I've made a few modifications to keep the airflow from getting under it and I have a few more mods to go; in the mean time I've been strategically placing 3 or 4 'rare earth' (very strong) magnets on the middle section of the bra to keep it from flapping at highway speeds (I removed the magnets before I arrived at the Saturday meeting).
Perhaps something in a 'sports' or 'bullet' bra would work better..."
Vieleicht kannst du es besser als mich uebersetzen

Wenn 'was nicht klar ist, lass mir wissen.
Gruss,
- Jeremy