The infinite NOS is used to cheat online. I said that because it's been discussed here so many times it just gets annoying when people keep requesting it.
Ok, everyone hates cheaters; especially when it comes to online racing. Doesn't EA have a way of detecting cheats on their servers for NFS Underground as it has to ofbeen a regular occurence throughout the series and if so, don't they have a way of removing them from the gameplay??????