Strange sights in Milpitas

Milpitas is a pretty typical Silicon Valley town with lots of quiet, tree lined streets.  My colleague and I went out there for a training.  We parked near one of these lovely trees.

as we were getting out of the car, we noticed that this particular tree seemed quite excited to be growing on the street ; )

That wasn't the only odd thing we saw on the trip, check out this roadway sign.

I mean, really, what the heck is Self-defense gymnastics?!?  So, if a mugger approaches you, do a back flip to get away?  Evade a carjacking with a front pike somersault ?  Little Jimmie have a problem with a schoolyard bully, teach him how to do the maltese cross, it is for the whole family as the sign says.