For those who have installed a caputer, how much interference do you feel when driving? I installed mine today and couldn't help but looking at it every few seconds while I am driving. I can definitely say that it intereferes with my driving. Maybe because the screen is too bright. Maybe I will get used to it, but I am scared it will cause an accident some day. How do people feel about those in dash navigation unit, don't they cause distraction to driver?