You have a bladder that has an 800km range, you can drive that far and stay full alert in one go ...... Let's be a tad realistic here, 400km range and 30 mins 10% to 80% adds up to a total of around 700kms, you are going to need a min 1hr stop by this length of driving if you want to put in another 400kms followed by a 30 min break and another 300kms, 1400kms in a day, stop over night and start again the next day ......
Having driven 1600km in a single run a few times moving from our house in Lake Illawarra to Mannum, is really draining and takes a day to recover properly, why do it, unless you have to .... in my case, I had a job waiting to be done on each occasion.
I refused to attempt it the 3rd time, way too hard on the body and no matter how accustomed to long distance driving you are ...... it's a lot harder in a car at car speeds than in a truck at truck speeds, the hills give you a bit of a break from the extreme concentration when driving a truck .... and hitting a kangaroo in a truck is deadly for the kangaroo, a big red roo is deadly for a car and quite, possibly the driver ... deer or an emu you might walk away, a camel .... even in a truck you might not survive, not a ho..e in a car .....
T1 Terry