Alight, so let me set the stage here: My friend and I are out for a cruise and a silver Audi A4 rolls next to me. We get to a red light and he revs his engine and rolls down his window. He asks if I wanna have a go, so I say "Eh, why not?" He then tells me he's stock, so I'm thinking that I'm about to stomp this guy. The light turns, I gun it and take the lead, and then all the sudden he flies by me with the white smokey-mist doing bursts from his pipe. The a$$hole was spraying NOS. Stock my a$$. I was pissed to say the least. I roll up to him, he starts laughing, and then drives off. That's life.