There is a further assurance that you do not have to draw the eyes off the road at the speedometer, the speed control, because then the driver has at least 3 seconds "flying blind" covered, which may be to prevent an accident even decisive.
At high speeds, these are, after all, a few meters "safety margin" which can be vital.
Because I miss a Head-Up Display of NAV GEAR had several years in operation, which is, unfortunately, exploded through some strange circumstances in the car, I'm back on my long journeys safer and more relaxed driving with the road.
Of course you have, as well as the cruise control and the NAVI, which are present in my car, so "practice" and schools themselves.
For me as a former BW pilots these 3 components are essential in today's heavy traffic.
Only the login until the transferee has the satellite signal is found, take, in my opinion, somewhat long.
