okay so I'm looking to trade in my 2003 Toyota Highlander for an Infiniti G35 coupe (years 2004-2006). The prices on the ones I was looking at were 4500-6000 dollars. I think I can get up to $4000 for my car (Kelly Blue Book). However these cars for sale have alot of miles (about 130000). Is the G35 going to be a reliable car at high mileage? And is the trade worthwhile?