Just curious, why would it matter? I assume you're commuting because you want to, so whatever's working for you should be fine. Why count or keep score? I've been 99% car free for 4-1/2 years, and happy with it. Sometimes I miss the car, sometimes I rent one for specific trips, and on days where I don't want to ride to or from work, for whatever reason, I take the bus. I don't worry about the 1% because I'm enjoying the 99% and as far as I'm concerned, that's what counts.

I really respect Tsl's streak, but I'd respect it equally if he had 5 streaks of 1/5th that length.