They cant really stop you but it really bothers some people. Ive seen people get in fights about it but normally its just something that's a given. It's like when you're at work or whatever and you say hi to some one and they just kind of ignore you or they look at you and turn away. Im sure it wasnt anything personal but I appreciate the apology. And yes you were polite, I just couldnt understand why you have a car that nice (and flashy) and expect people like me not to take pics. Ah well, water under the bridge....