Praise be to Allah.
We put this question to our shaykh, ‘Abd ar-Rahman al-Barrak (may Allah, may He be exalted, preserve him), and he replied:
The one who stole a car and took it to another city, then regretted it and repented, must ship it from the other city. He should not use it, so that its value will not be reduced by wear and tear. He must also pay the cost of shipping it.
And Allah knows best.