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The fuel you save is going to be burned and more when you call a tow truck.
And no goo will help a total blowout. I've had two recently, one from a deep pothole at 45, almost went into a canal, and the other backing into a parking space, I hit the curb which had a old busted iron plate that went into the side like a knife. Both times I was back in business quicker than a tow truck would have arrived.
Weight is mostly a factor in acceleration, and more is better for long glides, but worse in pulses. If you drive over 40, weight (rolling resistance) is pretty negligible.
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My bike runs on dihydrogen monoxide. 
I like to use these acronyms
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