The cost of petrol in Canada meets the figures quoted in the parent post. Gasoline is about $1.30/liter around major metros in Canada; a Toyota Corolla gets about 5.7 km per liter (highway). 800km would consume about 140 liters of petrol, about CAD182.
> a Toyota Corolla gets about 5.7 km per liter (highway).
This article lists it as[0]: 4.9 L/100 km on the highway.
That's $52 Canadian, not $182 Canadia. I'm pretty sure that 5.77 km/liter figure you're quoting is 100 km/liter making your figure off by a huge amount.