Newest vehicle is an 08, oldest is a 73, I would and have taken them 3/4 across the country from Pennsylvania to Montana. All my vehicles are very well maintained, and nothing is even close to new. I've seen 5 year old vehicles in worse shape then then my 3, 70's pickups. All of which have in excess of 200k miles on them. In fact my 73, which my pop bought new, then handed off to my uncle, then me has documented to have spun the odometer over twice, and it has 89k on it last years inspection. Original engine, and drive line. That's 289k on a 360fe with 4.11 gears and a 4speed non over drive transmission. I'd drive that truck to Alaska tomorrow.(if I could afford the fuel bill) point being there's no reason a well maintained vehicle can't be trusted regardless of age or millage.Better yet, don't expect 20 year old cars to complete a cross country trip, especially towing a trailer. My 2003 has been my 2nd or 3rd car for the last 10 years and I've kept it close to home. Thus I was able to catch failures before they happened and fix them in my own garage, limp it home a couple times when stuff was breaking, and the one time it had to be towed it was only 50 miles and $200.