Waterless car cleaning - has anyone tried it?

[rags]

Hey guys I was planning on buying water less spray online and was wondering if anyone has ever tried them and if they had any feedback?

I live in Central London so cleaning a car is always a problem so wanted to use the product. Also came across this company which seems to be launching soon and seems to be using these sprays as well : http://glint.instapage.com/

[rags]

Thanks good to get your thoughts. Agree with Dave, unlikely to work by itself, but I might give something like Glint a try if it is a week after I get the car washed and it just has rain marks.