Or vehicles!

I always interpreted that they could do plenty of cosmetic damage, but they couldn't do damage that affected the performance of the vehicle. Knocking a dent into a car is a lot easier than knocking a wheel off.

Punching a hole in the windshield in front of the driver would affect performance. Especially if you had about 3 feet of follow-thru. That's more of a called shot though (page 162), but if it involves punching a still vehicle it shouldn't involve a full -4 die. Unless it is hardened glass, which is likely part of what gives the Nightsky it's high armour rating, i know sidewindows are very doable. As well...

You laugh, but a good friend of mine actually saw this occur. He was at a party. A couple of guys were lipping each other off and decided to take it outside. Only the rules of engagement were "fluid", while the one guy goes out to the street the other hops in his car (to leave?). The pedestrian decides to stand his ground in the middle of the street and as the car comes towards him he jumps and lands his ass down on the hood, feet towards the windshield. He uses the momentum of the car coupled with him kicking downwards to spiderweb and partially cave in the entire front windshield with the bottom of his feet/heels. He then rolled off the side of the hood as the car kept going. Straight out of a freaking B-movie.

EDIT: In SR4 rule terms, he was likely hopped up on Cram or Novacoke. This was in the late 80's, so it wasn't meth. But it could have been an earlier version of speed, or quite easily cocaine because although it was rural Saskatchewan it was in an oilpatch area so the Robin Williams Rule may have been in effect.

My friend stopped going to house parties in that town after that.

I tell you, there are some crazy-ass people out there. Of course if the windshield hadn't broken the force would have gone straight up the pedestrians legs and busted something bad. Same as punching the side window, you better make sure you hit it hard enough to do damage or it is going to hurt like hell. It'll still hurt, but there is less chance of your hand being in cast for a few months if the window breaks clean away.

I'm not sure I follow the math/rules on this? How does this go again?

Just hit it with the planet Pick the thing up, bash it against the concrete.

Or do a little creative application of the RAW. Treat it as a barrier test, see how much damage you do.

I disagree. Lots of people punch hard enough to knock me out cold, but I don't know anyone that can punch hard enough to make a car inoperable.

To quote Rick James, "Cocaine's a hell of a drug."

Huh?

With Bone Augmention/Killing Hands, you do physical damage... thus being able to trash cars with your bare hands.

True; strike the bones. Critical Strike still holds.