Okay, so until I get to check the car in person, I went to lovely YouTube. A couple takeaways. One video showed the car idling around a parking lot. It had the deep burble somewhat oddly reminiscent an American V8. Not that I am drawing that analogy too closely, maybe the R8 is a classier comparo. It sounded great with a mean, deep grumble.
At speed, it sounded somewhere be the Ferrari/Lamborghini/Audi R8. I like that a lot. Not the high shrill of the Ferrari or the low growl of the Lambo or the overly sound deadened muffled (from inside) growl of the R8.
One classic line from an episode of Fifth Gear, Graham says, "If you think you want a Ferrari 458, think again!" Nice...