My process for a White Car with decent condition paint...
@ The local Spray'n'Pay 1min High Pressure Rinse to remove solid chunks. 1min run around with the Tyre, Wheel & Engine cleaner to break down the oils and crap (It's not overly strong at my local place, so doesn't kill the wax etc)
1min High Pressure Rinse 3min to go over the car with a microfiber cloth
1min High Pressure Rinse
Move it to one of the detailing bays and dry it off with a different microfiber cloth
I do this maybe once a fortnight on my way home from work...
If I'm feeling keen and its a weekend, I'll then take it home, give it another quick wipe down with a clean cloth and then give it a quick coat of wax on wax off, Mr Miagi style.
I don't have full days free every month to do constant detailing on it