The Montreal Bixi system is so fantastic. I've also used a similar system in Paris, but the bikes were nowhere near as good as in Montreal. The Bixi takes away so many excuses to not ride a bike. It's cheap. You don't have to worry about your bike getting stolen. You don't have to worry about maintenance.
My only worry about a similar system coming to Vancouver is:
- You'd have a hard time keeping a stock of them at the top of hills
- The rain might make things difficult
- Our helmet laws make it difficult to hop on/hop off
Hopefully financial problems in Montreal don't derail the whole thing. And hopefully Vancouver is smart enough to purchase designs already in place in Montreal.