Just some rough napkin math to go with my post above:
Average cost to own a vehicle per year is about $15,000 (
The Star says $16644)
Assume 400,000 cars in Calgary, that's $6billion annually.
In other words, Calgarians are collectively paying for an entire green line every year, just in personal vehicle costs. A decade of car ownership costs builds this project 10 times over.
That doesn't include any of the infrastructure costs, road maintenance, environmental or other effects etc. That's just the atomized individual cost of car ownership.