Hope you grow to love your Highlander hybrid, and the lower fuel bill.
We bought a Lexus 400h 21/2 yrs ago (after mortgaging the house to the hilt). I couldn't help but stare at the screen at first to see how many miles per gallon I was getting. Dangerous!
We love the gas mileage we've gotten. The best part of the hybrid is that it doesn't run when you're at a stop light, so you're not using gas or polluting when standing still (I think stop lights are programmed to turn red whenever I approach them, so this comes in real handy for me!