Gas is expensive everywhere but like most I thought that Ottawa was worse, until I went to California. Gas in the main centers is between $3.21 and $3.50 a US gallon. On the Coastal highway between San Simeon and Monterey I paid as much as $4.99 US a gallon.
That works out to 1.03 CDN a litre in the main centers and 1.49 CDN a litre on the coast. So it is roughly equal to Ottawa in the city and very high on the coastal highway.
Interestingly, in Canada the high prices have resulted in a lot of small cars. Not so in the US. There were few small cars, and no really small cars. Lots and lots of mega-sized, gas guzzling SUV’s though.