My personal take on this is: if you love a car and spend tens of thousands of dollars on it, shouldn't you put in personal touches on the car to make it more 'personalized' (including the washing aspect).
I tried this place called Shami Banana something @ causeway point. The vegetarian bryani portion was decent, rice was also quite fragrant topped with decent curry gravy. A friend of mine told me they have a main branch somewhere in Yishun though Non-vegetarian wise, there is this place called Al-Ame...