I love it when we're traveling. Once there was a sandstorm when we were traveling through Arizona, the freeway was closed. OnStar got us the last motel room in Benson. Saving us from having to go 50 miles back. There is another thread on the boards about whether WDW corporate sponsors actually get a "return" from their investment. We first learned of OnStar at EPCOT, where GM showcased their cars while Test Track was being built. We bought two OnStar equipped Cadillacs, and we never would have considered a GM product, since we'd had problems with their products in the past. We've had wonderful service the last 4 years out of these cars - and they're still going strong. Add to that the feeling of security of airbag deployment notification and I'm surprised more people don't have the system.