Nitro Exists when using Car with No Nitro Installed

[bamers]

Hello,

I want to report something interesting I found just now,
so I was in Quick Race, and I was using Washington 199 score,
where I got no NOS aka Nitro installed...

BUT, the Nitro did exist inside the race,
I could use it normally like the Nitro installed,
looked like it was lv3 upgrade lol

lemme show the pic below:
   

yeah that's all