Why would you want to waste your time, effort and stress trying to convert? You don't get any bonus points for it, and you'll never convert enough that you don't have to suck exhaust fumes on your commute. You might wear yourself out with wasted trying enough that you come across as pitiful and desperate to people you might otherwise win over, though.

Seems to me a more reasonable thing to do notice is people who already seem curious and interested, but reluctant, then encourage them by empowering them to overcome whatever concerns are keeping them away, with information.

You think bike commuting could be fun but you're worried about arriving at work as some kind of sweat monster? Here's a link to a thread of someone else with the same problem, and a gang of ways to obviate or solve it. You need to haul around more tools than you can easily get into a backpack? Substantial bike trailers exist, let me show you a place to buy some nice ones. There aren't sidewalks along the whole way? Good, you shouldn't be riding on the sidewalks anyway; here's an explanation of why it's demonstrably safer to ride on the streets, now let's examine what the local laws have to say on the subject.