Short answer, no. People often misunderstand volume and pressure. Your pipes can only supply a certain amount of water/time. the bigger the pipe diameter, the more water/time it can supply. If the supply is not large enough for the size and quantity of the openings, the pleasure you may derive will diminish.
Review the specs of the heads you want to run at the same time and add up their gpm required. Then, relate that to the main line coming in. Most people will find that they need to rework their entire plumbing system from the street to a larger WH to the valves to make a 'car wash' work as desired. It can take a huge amount of energy, and is becoming very ungreen! A high flow system can deplete the water in a WH very quickly, assuming that it could supply the gpm in the first place.