Picture 31One thing that Google made clear today is that the HTC-built Nexus One is the first in a line of so-called ‘Superphones.’ And HTC doesn’t have the exclusive right to manufacture them, Google’s VP of Product Management Mario Queiroz said today.

“We could very well do a Nexus Two with Motorola,” he said. “We’re working as quickly as possible.”

So that might appease the handset maker, which launched the Droid two months ago only to have it overshadowed by the Nexus One. In deciding to put its marketing muscle behind an HTC-manufactured device, Google risks alienating the very partners that have helped the Android operating system become a credible competitor in the smartphone space.

Queiroz didn’t say when a Nexus Two, Three or Six might show up. But judging from Google’s pace going from 1 to 20 Android-based phones in a single year, the next iteration could come soon.

(“Nexus Two” isn’t trademarked yet, so the second one could have some other name. But “Nexus One” belongs to Google, not to HTC, according to the United States Patent and Trademark Office.)