Rhenium is used to make high-temperature alloys for jet engine parts and in high-octane, lead-free gasoline.

铼可以用来制造喷气式发动机的耐高温合金部件，也是高能量的无铅汽油的成分。

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In addition, the lead free gasoline is being used in the engine, so vavle seat insert (VSI) must be made by scpecial materials.

燃料改用无铅汽油以后，阀座部分必须用特种材料制造的镶圈来补强，这种镶圈就是通常所谓的阀座圈。

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Often, this includes deliveries of ethanol-free fuel to gas stations (best found via Pure-Gas. org), marinas, race tracks, farms, and to various others who prefer ethanol-free gasoline.

通常，他们将无乙醇汽油销售给加油站（可以通过Pure-Gas.org查找）、游艇码头、赛车赛场、农场和其他一些希望使用无乙醇汽油的单位。

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And the dymaxion car -- which could have provided safe, pollution-free transportation using little gasoline -- was never produced.

VOA: special.2010.05.30

Cruze Eco offers 42 mpg highway while Volt offers 35 miles of electric, gasoline-free driving and an additional 344 miles of extended range.

ENGADGET: Chevrolet launches MyLink smartphone integration for 2012 Volt and Equinox

We're talking about a headache of a car that will have to be recharged for six hours to give 40 miles of gasoline-free driving.

WSJ: Obama's Car Puzzle

So how to find instant gasoline-free gratification?

FORBES: Magazine Article