I don't think people will start biking unless they like the activity but lots of people simply like to drive. The problem is that even those that like to ride (or would like) aren't being encouraged to do so. I'd rather focus on improving the biking infrastructure (make separated lanes, over and/or underpass bridges for big intersections, better public transit that allows to carry bikes on board) and improve the tax situation so I don't have to pay for car-only infrastructure even if I don't use it (car-only infrastructure costs such as building and maintaining freeways is mostly payed out of property taxes, not gas taxes). That way more people will feel safer to ride, feel like they are saving money while doing it and maybe even discover that they like it.