Without risking sounding stupid and going on, I must say, I really do not know about any of the safety features, which you mentioned; it has a fire extinguisher if that is what you mean by fire suppression system. I donÂ¡Â¦t know if you can fit a 6 point seat belt, but mine came with 3 point ones. Roll cage Â¡V I cannot tell, though I do know what that is (my SL55 has it). Handling, now I do know about that Æ’Âº. I have an 800 meter loop out in Surrey, and yes, I have taken it there. The steering is comparable to the Murcielago. Responsive, but typical of a sports car, very heavy, so yes a bit of under steer. But you really feel like you could take a sharp corner in the late hundreds (mph) with no problem whatsoever, but I wouldnÂ¡Â¦t risk it, I go fast but never risk anything. Brakes, I also do not know, sorry they are very responsive though, but perhaps not as good as the SLÂ¡Â¦s brake by wire system, but they do stop much quicker here (but theyÂ¡Â¦d need to, a W16 vs. a V8.). Absolutely no fade at all, that is whatÂ¡Â¦s so great about the W engines. Aerodynamics, what do you think, I donÂ¡Â¦t have a Physics lab man. However, obviously there is a lot of down force, but nothing unusual for a car like this, kind of like the old days of my Ferrari F50. But then again it is dam stable, (probably due to the Volkswagen groups knowledge from Porsche) also the fact that it is four wheel drive certainly helps. The front spoiler adds to the down force with the ground effect. The tail wing really helps in my opinion. Sound, amazing, like nothing you have ever heard (in car terms), but it doesnÂ¡Â¦t growl like a Ferrari. ItÂ¡Â¦s like a lion, it roars. I do not race competitively, but I do have track days out in Surrey sometimes. Other things, it has a cylinder cut off mechanism,(you get 8 out of 16) so you have to go past the accelerators pressure point for all the cylinders to kick in, but once you have done that once, it remains in all cylinders for the rest of that drive (but I think they do cut out again if you donÂ¡Â¦t drive it hard for long). In addition, if you go all the way with the accelerator you will get a sharp knock back into your seat, not dissimilar from firing a shotgun. There is a seven-speed transmission, double clutched, with steering wheel paddle shift. Embarrassingly the fastest I have been in it is 170mph.