8 hours from Doha to Abu Dhabi (with all border crossings). There is an IKEA in Abu Dhabi, so you don't have to go to Dubai (1,5-2 hours more).

Basically we left at 5:00, by 7:00 we were on Saudi border, by 10:00 we were on Emirates border, by 13:00 parked in our hotel in Abu Dhabi.