Once we had an ice storm, the kind that covers everything in super thick slippery as hell clear ice, and it covered my car pretty well. I didnt have a ice scrapper so I used the bottom of a glass soda bottle (the ones with the little nubs on the bottom) and proceeded to 'scrape' the windshield off. I got a good part done and was thinking to myself that the 'feel' of the scrapping was odd. So I look closer and here the bottle nubs where glass-on-glass scratching the heck out of my windshield. I dont have that car anymore. Oh I have another! This is actually my first car, the one from above is my 2nd car. My car was slowly leaking antifreeze over time. Being annoyed with this I bought some of that stop leak crap you pour down the radiator. I had done this and it seemed to work. I was driving home from work one day and my 'idiot gauge' came on for overheating. I pushed the car anyway ( as I was real close to home). As I came off the highway it stalled and died. This didnt destroy the engine (I thank an oil additve for that). The car later started and worked, but it had issues from that day on. I dont have that car anymore either! I may have more later.