New York — From the "you probably can't do this because you're not Google" department, Google has built a proprietary hotel booking application. It highlights both negotiated and market rates as part of Google's unique travel spending program. It's backed with centralized payment that means travelers don't have to fiddle with card numbers when booking.

And Google is looking for more. It's embarking on tests of virtual payment even as the v-card process at hotel . . .

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