Waymo’s autonomous cabs have logged millions of miles navigating complex city streets. Last week in Austin, one was defeated by a small pool of water. A new clip shows the moment a Waymo became flummoxed by a small puddle on Austin’s North Lamar Boulevard, a busy thoroughfare connected to the city’s downtown. A clip shared by FOX 7 Austin shows the Waymo stalled out on the left side of a two-lane road, refusing to get its tires wet in a small pu…