Reliable long trips car

Personally i would stick with anything toyota..
They are generally rock solid reliable and can be beaten on pretty hard before you have a glimpse of any issues.. I have never been left stranded in a toyota.. and have driven one of them to 982K miles without anything outside of normal wear and tear replacement parts and oil changes..

I third the 4runner. Depending on where you're headed the Toyota is bulletproof and if you get the fancy KDSS it is a bit more forgiveing with the bumps and what not. I think overseas it's the Hilux. Other than that it'd either be a Defender or a Wrangler, but reliability as well as comfort are compromised.