I think he missed the distinction between miles per tank, miles per calorie, and miles per gallon. like many people I talk to he seems to think in terms of miles per tank while hardly taking into account the volume of the tank. Shove a big enough tank into a gas guzzling SUV and of course it gets more 'miles per tank' than a 4 cyl econobox with a thimble sized fuel tank.

Re. the article, I thought it was quite good although those heart rate monitors are a very rough estimate of calorie consumtion. Actual consumption varies quite a bit between individuals. I wish he'd had kept a log of his 'fuel' consuption, it would have been interesting to analyse....