The car is remarkable. The build quality is great. The power-to-weight ratio and electronics smoke. The nav system almost reads your mind. The Mark Levinson audio is a pleasure to listen too as well as the long list of accepted discs. The electric steering is a bit light but not unpleasantly so. I think the car could benefit from the 430's adaptive suspension. The GS 350 AWD is a magnificent piece of engineering!
Power, electronics, fit and finish.
More communication in the steering, adaptive suspension, iPod integration.