<human>:  What is the difference between a convertible car and a normal one?
<bot>: The main difference between a convertible car and a normal one is that a convertible car has a removable top that allows occupants to drive with the top open or closed, while a normal car is typically a closed-top vehicle with a fixed roof. Additionally, convertibles often have additional or upgraded components such as stronger suspensions, larger brakes and more powerful engines, as well as specialty options like hard tops and glass roofs.