Driving across the nullarbor?

Hi everyone I'm planing to drive my 1999 ford laser kn lxi hatchback from Torquay victoria to Perth WA and I will be crossing the nullarbor. Could anyone give me some advice? Also would driving in my Laser be a good idea? My friend is coming along so we will take turns in driving. I will not be driving back again. It is an auto and in good condition other then a few stone chip's in the paint everything in it work's and the aircon work's very well.

Any Advice would be great thank you. I have drove it down from queensland to Victoria so i have done some long distance driving before and i was alone at the time.

I will be traveing in January

Nullarbor is easy these days, apart from keeping awake. Roads are good but fatigue is the main problem. As the signs show, watch out for kangaroos, emus, and camels. Last time I went across in July, there was a dead young camel on the side of the road. Imagine what that'd do to your car. Also, be careful of the road trains. One time, going across, I gave a lift to a couple of young blokes where the inexperienced driver had got scared passing a road train because the rear trailer had fishtailed a little so he headed off into the mulga. Wrote his car off. Don't worry about the roadtrains. They only fishtail a little.
Get your Laser serviced before you go, especially the cooling system.
There are road houses every couple of hundred kms. The Nullarbor roadhouse has the most expensive petrol, so try and skip it. Petrol is generally 1/3 more expensive across the Nullarbor.
Take water with you as it's at a premium across the Nullarbor. It will be mid summer and very high temperatures. What water is available is mainly bore water.
If you have any more questions, contact me.
Have a good trip.