Hmm, "TUX1337" seems a bit odd to me, because it's a combination of two things you wouldn't really say together anyway. I'm guessing TUX and 1337 by themselves were already taken.
Also... I just thought I'd say that while I have no problem with Linux (ran Ubuntu as a HTPC for a while, ran Gentoo on my laptop during university), for some reason people with Linux stickers on their car just come off as "look at me, I'm better than you because I don't use a Windows or OS X machine". No offense intended.
EDIT: Also, wtf, where is your exhaust tip... lol. Guess Subaru's going for the electric car look with the 2012+ models?