Is that against the law? I guess I better quit parking my trucks on the sidewalk then, oops.

I would imagine that it is illegal to park on the curb or sidewalk where you live. In CA it is illegal to park across a sidewalk impeding pedestrian traffic even if it's your own driveway. They may also consider the sidewalk a fire lane subject to tow away. In CA if you park across even your own drive way you will get towed since they do consider the driveway and anything from beyond the curb a fire access point.