We had a wonderful irony in local elections recently: the newly elected mayor doesn't have a driver's license, he hitchhiked to work previously as a city counselor and plans to continue that as mayor. Many of his opponents had car parking high on their platforms :).

But they need a bike park instead. Granted you can park 5-10 bikes in the space of a car (depending on the size of the bikes and car), but we still need to have this space.

1. Not necessarily. You can bring your bike indoors and leave it in a spare room, on a hook on a wall, or next to your desk (if in an office)

2. You've acknowledged that bikes are 5-10x more space efficient than cars. So it's an obvious win.

> Granted you can park 5-10 bikes in the space of a car

Substantially more than that. Don't forget about vertical staggering and about the space saved from not needing a safety margin between car spaces.