Plastic Cup Lids
Prepare to be blown away! The plastic lids that accompany disposable cups were designed to act as a coaster as well. This is not applicable to you if you get a cup to go and drink it in the car. When you are planning to sit down and enjoy the drink, however, the ridges make it perfect to use as a coaster. Who would have thought that there was a method to this madness?
Detachable Car Headrests
During family road trips, you were probably seated in the backseat. You must have played with the headrest in front of you out of boredom as well! The headrest can actually come out of the seat. The reason behind this was so you can use the metal bars to crack the window in case of an emergency!