here you go, sorry i do not have actual car so this will be a good substitute
The first pic below is that the watch is worn is normal position
If you wanna watch the time while driving, notice the angle i need to turn my wrist in order to look at my watch. That means your eye is looking less on the road and you are bound to get into accident if you are not careful
Now with the watch worn face downward
Notice how much less my wrist need to turn when i wanted to read at the time on my watch
Hope you guys understand this, it is applicable for left/right handed ppl. Also regardless wherthere you are driving left/right hand-side there are all similar