It was three years ago, I drived a 89' Honda Accord on the way down
along the high way 94 inside USA, I took a few stops only when refilling
gasolin or while I feeling tired. the whole trip took me two and half days,
I arrived at Toronto at about 3:00 PM. The total mileage of the trip is
about 2800 miles(44800 km), and the costed price of gasolin was about
140 US$, each refilling can go 400 miles with 14 Gallons for cost
of under 20 US$ at price 1.20 US$/Gallon. Luckly, my car had not
get any problem in the whole trip( I still use the car up to now).
I hope my experiance will be helpful for your planing.