This is why I cannot use my G1 as a music player in the car. I cannot manipulate it without looking at it, which I really do not want to do while driving.
My Sansa E500 thing is easy to manage by touch only (except if I want to see the name of the song playing); my eyes don't leave the road if I want to skip or repeat or pause a song.
Likewise, if I need to make or take a call while driving, and pulling over isn't an option, I want to be able to do a much as I can by touch, and not worry that a misplaced tap or glide on smooth glass has triggered some unwanted behavior.
Yes! I tried using my iPhone as a music player in the car and... useless. But it extends to more than that, I could make calls on my late-90's cellphone call friends with a flip and a button hold without looking, and mashing end-call always worked because it's a real button.
Now it's squint at the damn phone and tap around. Hanging up is just the tiniest bit more annoying without a hardware button (yes, I'm aware that many smartphones have a physical end-call button).
You should use the included headset or get a car dock. Either solution would give you the controls you need to use it as either a phone or music player without needing to look at the screen.
This is a problem best solved by the car UI, rather than phone/music player. Steering wheel controls (and/or voice commands) are FAR less distracting than any ipod sized device.
My Sansa E500 thing is easy to manage by touch only (except if I want to see the name of the song playing); my eyes don't leave the road if I want to skip or repeat or pause a song.
Likewise, if I need to make or take a call while driving, and pulling over isn't an option, I want to be able to do a much as I can by touch, and not worry that a misplaced tap or glide on smooth glass has triggered some unwanted behavior.