Sorry to interject here, but how would weight be a benefit in the winter?

A reduction this great in fuel consumption would make a noticeable difference in running costs to the average person. If you drove 25,000kms a year and switched from a 10l/100km vehicle to a 1l/100km vehicle you'd save $3,175 per year at $1.40 per litre, that's $31,750 over ten years. If it is cheaper than that, and…

electric turbocharging, this is what Tada is referring to. I think. maybe. probably not.