I'm saving 10-15 minutes easy by doing it this way. It does take some time to get it down, but when you do, you will love this method! I'm also assuming that if you are reading this, you know how to wash a vehicle with a rinseless technique. Search "rinseless wash" to learn more. Spray wheels, tires, and wells with degreaser. Also the lower body panels and front bumper if needed. Pressure wash entire car making sure to clean the wheels, tires, and wells thoroughly. Using DP's 4-in-1 rinseless wash (or Optimum's No-Rinse), start at the driver's side roof. Do half. Then onto the front door and window. Open the door and do the interior front window (half) and interior driver's window. Go around the entire vehicle using this method. You can even wipe down the interior panels and dash area with 4-in-1 making your job even more efficient! When you get around to the hood, do the hood one half at a time. After the front bumper, you should be done. Dress tires and wells. They should be dry by now. I've actually done this step first on the last 4 vehicles I've washed. I just have to dry them manually. The good thing is that any overspray will get cleaned up while washing. Vacuum the interior. I'm even now considering vacuuming the same area that I have just washed. Should save more time. I'll let you all know. Dress interior. No, I do not do this every time I maintain a vehicle. Depends on the situation. If I've used DP's Interior Protectant before, I only reapply it once a month giving me one session free of dressing the interior. DONE! *The key here is not having to stop and go to pick up bottles of cleaners. This time adds up to an easy 10-15 minutes per vehicle. **You are saving even more water by not having to rinse off soap. This also keeps water spots and dried soap from forming. Depending on the vehicle's condition, you may not even have to use a pressure washer at all! This will save another 10-15 minutes easily. Time spent examples: 2006 GMC 2500 Truck..... (Covered in mud.) 65 minutes. 2003 Ford Ranger.... (My truck. Well maintained.) 27 minutes.