What I've been told is that it is perfectly legal to ignore the summons, since it's sent by regular first class mail. Once you acknowledge it, though, you're on the hook. I'm having a hard time understanding why you're drawing the line where you are. Best of luck, but I'm also not sure why you're looking to a pinball forum for help or advice. It seems you're probably out a few dollars for a day or two worth of parking, then most likely you're off the hook for a while. If that's the whole deal, then I'd just call it good. Otherwise, as has been suggested, there is always public transportation, or even Uber.