Writing in the car

I should be writing a poem or two right now but I'm not. I've been writing pieces of poems (say, two lines) in the car this week. It's been a pretty good car-writing experience. But none of that is going anywhere. Probably because it's only two lines, and by the time I get home the adrenaline (of driving?!) is gone and I'm over the poem. This makes me think, again, that I need a tape recorder in the car so I can just talk and hopefully come up with a poem. But then, I always hate the sound of my voice on a recording and end up hating whatever I have "written" in this way, merely because it sounds wrong. Perhaps I should never read my poetry again, as it is probably changing how people feel about the poem. My voice can do that.