You cannot drive 13 hours from Texas and still be in Texas. In order to drive from someplace you have to leave there.
You can drive 13 hours through Texas. That’s possible.
Also, if you're in Texas and you have the will to drive 13 hours, I imagine you'd want to leave Texas.
General rules:
Exceptions may be made at the discretion of the mods.
You cannot drive 13 hours from Texas and still be in Texas. In order to drive from someplace you have to leave there.
You can drive 13 hours through Texas. That’s possible.
Also, if you're in Texas and you have the will to drive 13 hours, I imagine you'd want to leave Texas.