Okay, here is what happened. Lexus hybrids have the same dumb traction control system that Toyota's have (Toyota owns Lexus). This traction control system, if it senses any major slipping will take away all power to the driven wheels. If you don't belive me, watch this video with a Prius (same traction control as any Toyota or Lexus hybrid has(RX400hybrid)) trying to get up a driveway with a little ice on it. Here it is:
http://www.youtube.com/watch?v=Y52iW82dupM