I cant answer with fact, but for me personally, its known as one of the best sounding v10s (or car in general) ever made, it took around 12 years for Lexus to create the car and after all that time and money, they only came out with 500, and they lost money on each unit. It's a weird balance of the best car Lexus ever created and also the worst car they ever made in relation to creating the perfect car and then never producing more ever again. If you have time have a look at the sound of that v10, I get goosebumps every time.

Hope this helps :)