Mouse options: touchpad versus other options
Ok, first of all hi there to everybody, this is my first post on these forums although i've done a bit of reading through alot of topics on here previously. At the moment i still don't know alot, but i'm going to be putting in a carputer into my Holden VS Commodore (Australian vehicle - guess where i'm from) shortly. Now i've been thinking about options for a mouse. I plan to use a touch screen, but i'd still like the flexibility of a mouse for more precise actions and the likes should i need it.
Now, with the space i have, a normal mouse that involves moving something around on a pad or surface of some sort is impractical. I've had a quick look into touchpad mice, like the ones you get on a laptop where you glide your finger over the small pad and click. I'm thinking if i have room, it could work for me to mount it on the armrest of my door, or failing that, i have some free space near the handbrake i could mount it.
The other thing i remember seeing mentioned here is it a trackball or rollerball mouse or something? Can anybody explain these to me?
Basically i'm looking for a practical option for a mouse that can fit in nicely and allow me easy movement without figety crap that takes half an hour to do two clicks. Any advice or further information, shoot away. Cheers, Bryce :)