Opportunity ? or nightmare

[Scooter]

Okay, you are going to puke and die. We do not use a new bucket for every car, so usually we can get by with a half gallon of soap really easily. A 5 gallon bucket will last 15 to 20 cars. You might want to cut that down some becaue you are not doing fleets of cars.
As for the DI bottles, they are always rented anyway, so that all you would have to do is get someone to rent them to you. I use Ionics, Culligan is also usually a good source. For me, it would cost about $35 to rent a mixed bed tank for this type of thing. Since you would not be a regular customer, it might be a little higher.
Be careful with the DI tanks, once you use them, it could become addicting because of additional ease in washing the cars.

[Jay's/Autodtail]

good luck buddy hope everything works out for u

[Superior Shine]

oops!

[Thomasfl]

I agree with others that this is an opportunity to increase business, especially with a flyer and business card. I would put together something special a 30 day special - a package with a decent price should work. It seems like time is going to be a concern. Seriously the Spray and Wash idea would work, although you would need alot of MF`s, also check out Protect All`s - Quick and Easy Wash, you put this special soap (full of lubricants) in a bucket with water no need to even use a hose, you wash and then dry. One person washes, one dries, with two people I can do a car this way in 5 minutes, washed and dried. I use the Big Blue to dry, but whatever you prefer will work fine.