It's called "tufting". You can also make a manometer cheaply...

 

:-)

i got a 'man-o-meter' for ya, it goes like this:

- man puts stuff on car
- man goes to track
- man drives at high speed
- man thinks it handles sucky, then man rips wack **** off car
- man thinks it handles better, then man keeps wack **** on car

(hahaha)

:-) my workin version of a man-o-meter

 

What, no racer chicks?

 

lol :-)

edit: replace all 'man' with 'person' in above posts :-)