I tend to think the longer warranty would be where the car was purchased. If it was where the car was registered then whenever an owner relocated to CA/NY they would have the extra 50,000 mile warranty. It seems this would be a huge headache to Toyota since owners could register in one of these states after their own warranty expired. Seems like a legal issue as well. The 150,000 mile warranty I read was on the batteries. I am trying to get documentation on this.