I've had days like that too. It's creepy when you realize that the info and concentration you need for driving can get haywired as it goes into your brain.

It's been hard, but I've learned which days I simply cannot in all good conscious be behind the wheel. Not fun, but I'd rather play it safe.

I've also learned that I cannot always have the radio on, and definitely no talk radio at all. Some days I can drive fine, as long as it's the only thing I'm concentrating on. So no tunes going down the road. The joy of not being able to multi task some times.

I also never, never pick up my cell phone in the car. If someone calls, I find a place like a parking lot to check and see who called. If it can't wait, I call them back.