Correct - it is just a front end GUI for a pc, pretty much used for in-car.
You dont have to use a touchscreen, but if its in a car when you are driving a mouse/keyboard would be hard work hehe.
I have bought the bare bone components - ram, motherboard, harddrive, power etc. i will mount it all in the glove box - along the USB gps receiver, obd2 plugin and other connections for music etc.