As far as navigation, I really like how it's done on the HUD in the Camaro and Corvette. Normally, the HUD shows digital speed, analog tach, current gear on aut

As far as navigation, I really like how it's done on the HUD in the Camaro and Corvette. Normally, the HUD shows digital speed, analog tach, current gear on autos, and a couple status things like turn signals and headlights. When a navigation command is coming up (turn right on US-1), it shows a little progress bar indicating when you have to turn, an arrow pointing the direction to turn, the name of the road, and the speed in smaller text: http://www.flickr.com/photos/bonzoesc/7176906639/sizes/h/in/photostream/ http://www.flickr.com/photos/bonzoesc/7176906639/sizes/h/in/... When the song changes on satellite radio, or you tune the radio, it shows the artist and song title temporarily. As far as getting a secondary read on acceleration vs. speed, I'm spoiled by driving manual, and I generally know how I'm accelerating based on pedal position, current gear, and engine note. The only car that's really scared me with a lack of speed feel was the Nissan Murano, with a continuous transmission and no changing engine note from about 30mph to 90mph.