No mine is not a daily driver, it was untill last year. The time it takes depends on the condition of the car. Mine has a lot of surface rust on the decks that has to come off. The whole car was repainted at some point and the paint is peeling off, so I'm sanding way down almost to bare metal. It really dosen't take that long, there is no real down time. You don't have to take the parts off, I did because of my Apartment rules. I suggest using good materals though. I used the Rustoleum quick dry Auto primer, and I got a trigger attachment that fits over the sprayer. It makes is much easier and I seem to have more controll. One thing to remember when using rattle can primer, the paint goes on much thinner than when using a paint gun. I think the paint gut puts on a 1.5 mil coat and the rattle can only puts on a .5mil coat. So I put a few extra coats on. I'll send you a PM with my phone no in case you have any questions. Take some pic and share them with us.
Vince