Titanium is an ultra-strong, light-weight metal element which can be found in some parts of high-performance cars. It is more often used in small parts, due to its cost. Titanium's high value comes from a combination of high strength, light weight, and the rarity that comes from the difficulty involved in purifying it.
Titanium is used in engines which generate incredible amounts of power, and the heat from the excess energy of that power would melt other types of metals. Its light weight aids in producing more horsepower and making moving components easier to balance. Lightweight components also reduce the overall weight of the vehicle, but this has a minimal effect on the overall weight of most vehicles.
Titanium has the symbol Ti and atomic number 22. It is the ninth-most abundant element in Earth's crust and the seventh-most abundant metal.