Don't know if it's true or not. According to Boing Boing some of Miller's TIG welding power supplies come intentionally crippled, locking out many useful functions until you buy a $400 SD card.
A mate of mine has a 2013 Laguna series ford Mustang,
It comes with two keys,
One allows the full 440hp,
The other "valet" key as its called only allows about 200hp,
He calls it "my wifes key" lol
Dodge Charger Hellcat has that...
Black Key is the Valet key somewhere around 400-500HP
The Red key is the full power key - 707HP....
http://www.drivesrt.com/2015/challenger-srt-hellcat/
And if you have the software that audi/vw group have, nothing is a problemNew audi and BMW options are all installable via configuration to the software by dealer. So theyre made with the options there from factory then the dealer unlocks the options if the buyer decideds to shell out,