What does it mean when an ex lets u drive hes truck ?

It means he wants to get his dipstick into your oil one more time.  Nothing more, nothing less.

I'm a guy, been one all my life, and that is the one and only reason I would ever let an ex drive my truck.  It doesn't mean I think our relationship ended for the wrong reasons, it doesn't mean I want to get into another heavy relationship with her, and it definitely doesn't mean I'm trying to send her a hidden message.  Because I'm a guy, which means we don't do hidden messages.  We have enough trouble getting girls to understand plain sentences, so we don't have the capacity (or the time) to figure out hidden messages.

But it does mean he wants to nail you at least one more time.  That much is certain.

Anytime an ex lets you drive his vehicle, it ALWAYS means two things:  1) He wants to nail you; and 2) He wants you to fill up his gas tank.  Seriously though...is this a real question? You can't be that dumb.