It rains a lot in Melbourne. How many times in the past have I thought to myself "I really should get the car cleaned but I think it's going to rain later today..." so I don't bother? I'm sitting right now at Watershed Carwash Café in West Melbourne and noticed they have introduced something called their "Rain Guarantee". If you get your car washed there and it rains within 24 hours, you can take your car back to the same carwash the following day, show them your receipt, and they will give you a free hand wash. I do believe that's a purple cow! I normally HATE carwash services with a passion - they usually do a half-arsed job. But finally I've found something about a carwash that I want to promote. That's good word of mouth marketing.