The alphabet of Subaru

OK, so I'm in the market for a WRX Wagon, and I'm going to be upgrading it with STi parts. So, I know WRX stands for "World Rally Cross" and STi stands for "Subaru Technica International," but the STi's also have an "i" badge in place of the regular Subaru grille badge. What's the "i" stand for? Impreza? Insanely fast? Invisible to unsuspecting Mustangs? Immensely cool? Just wondering...

PS- If there are any other interesting abbreviations related to the WRX's I should know about, post them here, as well.

"Impreza."

PS- If there are any other interesting abbreviations related to the WRX's I should know about, post them here, as well.

http://www.scoobymods.com/forums/glossary.php

Thanks, guys.

i do believe the full name is....subaru impreza wrx sti

but you can sum it up with...."this is my bad ass car"