Your Technology Aug. 2, 1999

RUNNING EMPTY Worried about toting a potentially incendiary jug of extra fuel in your trunk? Your answer may be Spare Tank. It's a gasoline derivative much less combustible than ordinary gas, thus less likely to explode. Still, it packs enough punch, when mixed with residual fuel in your tank, to get you to the next station. Cost: a high-octane $24.99 a gallon.

YOU'RE E-VITED If you think it's a drag to send out invitations by snail mail, consider a new website called evite.com All you need to do is fill out one of the site's prepared invitations and, with...

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