You can't be distracted from driving no matter where you are driving or when. When driving you have to be 100% focused in driving because every tiny risk you take can be fatal or worse.

I hate to be this guy but I've lost too many people for small stupid mistakes. The equivalent of this is getting killed when you accidentally bump into someone in the supermarket. This is just not fair.

Never take a chance, stay safe, life is precious and fragile.

At this point you could have just said it generally: "stay 100% focused, stay safe, life is precious and fragile".