One that sometimes gets lost in the mix but is actually quite useful is that small button on your door handle. It's found on all types of cars -- and all types of car owners are confused.

Starting a button-making business involves a modest investment in equipment, supplies and marketing aids, and you can operate this type of business from a spare room in your home or a small rental ...

All cars are equipped with seatbelts, and the more observant people may have noticed a small button on them. But what is it for? Now a US-based TikTokker has revealed the answer in a video titled ...