OK Smoke do that but I assure you it won't be too expensive...
The Car rent & petrol we split 50-50.
Then We won't stay in star hotels...We will use the motels to freshen up and for emergency we will carry sleeping bags, lot's of undergarments,sox, instant food and other essential gear.
I have the GPS navigator.
And Visa charges aren't that much.
So it wouldn't be a lot of money spent.