Meetings are for the weak. The truly powerful know that the best way to get what you want is to avoid them altogether. And not just avoid them, but pretend you're not there when you do.
Just stand up and leave. Don't bother saying anything, don't make eye contact. It's like you're a magician, and your magic trick is making everyone think you were never there in the first place.
Learn more about Phantom Calls: The Art of Pretending to be on Another Call
A simple "Sorry I'm late, traffic" can go a long way. It's like you're apologizing for not being there, but also implying that you're so busy being important that you couldn't possibly have attended.
Discover the art of being Overwhelmed by Life
Divert attention by pointing out something, anything, to distract everyone from your absence. Like, "Has anyone seen my phone? I swear, I left it on vibrate."
Read about Phantom Emails: The Art of Sending Empty Messages