What is the thought around higher mileage 460's? I'm looking at a one-owner 2010 with around 150k. Seems to be regularly maintained and serviced, and was told the majority of the miles were highway to and from work. I know very little about the GX line - I currently have a 04 100 series w/ 140k and no issues, and my in-laws have an 80 series w/ 230k that is still running strong. Do you think the GX460s should expect to see the same life span with normal, on road driving duties? Thanks!