I get the same...you know what they are thinkging, perish the thought of spending more than 20 minutes with an old sponge from the floor washing your car! I think one of the main problems is most people don't clean their car enough, and don't understand what you are doing. Even my mum thinks I am polishing my car every time, I try and explain that its rarely polish, and trying to protect the car from all environment.
Like you say, people clean their houses most day and think its strange to clean your car once a week or whatever. When I see people drive past I just ignore them so as not to have to make eye contact and pretend I am embarassed doing it again. Its just worse as my house is at the bottom of a busy close. Ignore them mate, its your car and want it to be kept mint, nothing wrong with that at all. If not, just start jacking up heroin on your lawn every morning and they will be glad when you go back to washing your car.
Like you say, people clean their houses most day and think its strange to clean your car once a week or whatever. When I see people drive past I just ignore them so as not to have to make eye contact and pretend I am embarassed doing it again. Its just worse as my house is at the bottom of a busy close. Ignore them mate, its your car and want it to be kept mint, nothing wrong with that at all. If not, just start jacking up heroin on your lawn every morning and they will be glad when you go back to washing your car.