How soon can you drive after a full tummy tuck?

Your plastic surgeon will always be your best resource when it comes to post surgical advice.
In my practice, I ask patients not to drive until they are no longer taking "mind altering" medications and can respond to an emergency when driving (there are both comfort and safety considerations involved).  
Some general thoughts regarding tummy tuck surgery and recovery may be helpful to you:
The tummy tuck recovery experience will vary from one patient to another but, generally speaking, the recovery experience associated with tummy tuck or mommy makeover surgery is often underestimated by patients. In other words, it is a significant operation associated with a significant recovery, both from the physical (and often) emotional standpoints.  It is not unusual for some patients to require several months before they regain preoperative strength/stamina/energy levels.   What I have observed  is that many patients are about 70 to 80% of their energy level at the 4 to 6 weeks post op period and may require 3 to 4 months before they are 100%.  Again, it is not unusual for patients to experience significant emotional "ups and downs" as well.
Therefore, I think it is best to prepare for a “recovery” of 4 weeks after tummy tuck surgery.   Most patients require at least 2 to 4 weeks off work, depending on their job requirements;  I also ask patients to have full-time help for at least one to two weeks after the procedure is performed. Of course, experiences will vary from one patient to another but (again) many patients do not return to full strength and stamina for several months after the procedure is performed.
Best to “go slow” and listen to your body as you gradually increase your activity level. Best wishes. 

Once patients have stopped using any pain medications or muscle relaxers, many are able to return to driving approximately 10-14 days after surgery. This will vary based on individual recovery. Your surgeon is your best advisor to let you know what is recommended in your particular situation.

As a general rule it takes about two weeks before you can straighten up due to the significant abdominal tightness. Therefore, you shouldn’t even consider driving for the first two weeks.
After two weeks, common sense should be used. If you feel like you are safe to get behind a wheel based on how your body is feeling and how mobile you are, then by all means you can drive.