
Car racing teams have always sought to build the fastest and best-performing cars possible. They've enlisted some of the top car designers and engineers to help with the job. When car racing has a breakthrough, it is almost always applicable in some form to mass-produced cars. As a result, race technology has influenced many of the components of the car sitting in your driveway -- from the basic engine design, to the position of the ignition, and even the rearview mirror.
Transmissions

Enter Direct-Shift Gearboxes(DSG) and clutchless manual transmissions. Both of these types of gearboxes are racing technology that allows drivers to shift gears quickly and make sure that they shift into the correct gear.
DSGs actually work like two transmissions: one dials in the odd numbered gears and one dials in the even numbered gears. Because there are two transmissions, the next needed gear is always "on deck" which makes the DSG faster than a manual transmission. DSGs also don't use a clutch pedal, which makes them faster than a conventional manual, and less prone to driver error. DSGs are a fun addition to road cars (right now they are mainly seen on sporty Audi and Volkswagen models) because they allow drivers the fun of a manual without the hassle of a clutch pedal.