I do not wash my car everyday, just once a week and if it is not wet in rain, just spray waterless wash and wipe with a MF towel. A simple wash with good quality shampoo and finished with quick detailer keeps the car clean for three days easily.
I also do not wash or clean with waterless wash if there is a rain forecast for next day because it's useless. I always check weather forecast from MSN and Yahoo sites for my local area, if rain is forecast I postpone.
You can contact Ahmad bhai or Abdul Hayee bhai for the waterless wash. They have better and economical solutions, not that expensive like Meguiar's.
With just a couple of microfiber towels and waterless wash, you can daily clean your car in 20 minutes without washing and dry dusting.