The lack of speedometer in front of the driver is an issue. The location of the speedo coupled w/everything (e.g. nav directions, wiper controls, etc.) being crammed onto the center LCD doesn't help things. HUD helps mitigate that.Why are people so ga-ga about heads up?
Heads-up? How about "brain-on" first. Glancing six inches below the window isn't what's causing the accidents.
Even the non-luxury car '12 Prius had it as an option: