Okay, I'll add to this OLD post just on the chance that some people might be reading it...
IMO, the best car smell I have ever known comes from the inside of my NSX. I use 303 on all vinyl, Zymol leather conditioner on the leather of course, and (the secret) a new car smell pine-tree freshener that I throw under the passenger seat (thanks Rogerm for this tip). It DOES NOT smell like a new car, but it does have a very unique, very sophisticated smell that I get complimented on ALL the time.
IMO, the best car smell I have ever known comes from the inside of my NSX. I use 303 on all vinyl, Zymol leather conditioner on the leather of course, and (the secret) a new car smell pine-tree freshener that I throw under the passenger seat (thanks Rogerm for this tip). It DOES NOT smell like a new car, but it does have a very unique, very sophisticated smell that I get complimented on ALL the time.