Full disclosure: I live in Montreal, but I'm from Vancouver. I love riding bikes. Montreal just opened Bixi. I love it. I'm a complete unabashed fan of Bixi. (
http://www.bixi.com/home), Bixi is a bike sharing deal run by the city. It's only been going a week or two so far and hasn't nearly come close to it's full capacity / breadth of service, but is already amazing. I am really impressed by it so far. Anyhow, I can predict this type of bike sharing system would be a colossal success in parts of Vancouver:
Downtown
West End
Kits
Strathcona
DTES
Grandview slope
UBC
south Granville
Mount Pleasant
Commerical
Really, a bike sharing system could probably work in Vancouver in a rough donut around downtown: (anywhere north of King Ed and west of Commercial)(+UBC?)
Anyhow, check out the stations already in service and see for yourself:
http://www.bixi.com/the-stations The city of Montreal has kind of created the most advanced bike sharing system in the world. This is made in Canada technology.
http://www.bixisystem.com/home The city is keen to export the technology.
This should be in Vancouver!