The first one i use to do years ago back in middle school lol. figured that one out on my own lol.
The second one is a fake video. you physically not attach a can to a car no matter how much static you put on it. also it tells you that it wont work on certain surfaces which is very fishy and there would be no difference in electro static electricity if you rubed it on ur hair for 5-7 minutes then 2 mins of even 30 seconds