[gadget]

The bubbles aren't the issue here, in fact... mix/stir the wash n wax well before use, use lukewarm water, not hot, pre-rinse the car first, get rid of all the dirt n dust with high pressure washer, the less you physically touch the car the better. When thorough pre-wash (rinse) is done leaving the car wet ... commence washing with the lukewarm wash and wax, do a panel or two at a time then rinse off and then start with another panel or two.
The important part is ... don't let the suds dry before rinsing (hence... doing a couple of panels at a time).
When all panels are done, rinse whole car and leather off.
Same procedure for a bike but not using high pressure washer. Also . Never wash the car/bike in direct sunlight, it plays havoc with drying times and almost always leaves behind residue from whatever brand of wash n wax you use.
This method works best for me and is by no means the definitive guide.
Health and safety rules apply here too, never wash your vehicle wearing only slippers and speedos!!