Google is giving away free gas between LA and Vegas

Good news for California and Nevada drivers this weekend: Google is offering up free gas for two days between LA and Las Vegas.
Yes, really, free gas. 
The giveaway is part of a promotion around its new Google Maps app and includes free burgers and coffee for drivers making the schlep between the two cities.
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The free gas (up to 10 gallons) is available until 8 p.m. local time Friday July 22 and from 11 a.m. to 7 p.m. Saturda