Motion Sickness

I wish I could write while driving. I seem to have so many good ideas when I'm cruising around with the windows down, music blaring, and singing loudly and off-key. I come up with great ideas to write about, to think about, to talk about, to read about. But then I reach my destination and I get out of the car and, for the life of me, have no clue what the hell I just thought about. It's frustrating to say the least.