vastly more expensive is relative.... to compare the historical cost of gasoline with today's values, it needs to be
adjusted for inflation
or put it in a better context that the salary range back in the early 1970s was anywhere from 2,000 to 7,000 PER YEAR.
using a crude math example...
1972: let's assume a $3,000/year salary, $5 per fill up every week (40L @ $0.125/L), that's $260/year in gas and 8.7% of the annual salary
2012: let's assume a $30,000/year salary, $50 per fill up every week (40L @ $1.25/L), that's $2600/year in gas and, oh, the same... 8.7% of the annual salary
where the cost of gas has really gone up is in the amount of trips in traffic and/or kms driven now. we are pumping more because we drive more - people work in Mississauga but live in Markham, as an example, or people commute but are stuck in stop-and-go for hours on end.