Speed of Life (Chinese: 鐵馬戰車; Cantonese Yale: Titmáh Jinchē; literally "Motorcycle, Car") is a 2016 Hong Kong police procedural television drama created and produced by TVB, starring Kenny Wong, Benjamin Yuen, Natalie Tong and Sisley Choi as the main leads.

After seeing Bui Baby's passion and commitment to her job, and her being the only one not afraid to approach him when he is down, the two form a mentor and protege relationship.

To Sir's other problems are his former subordinate Sze Ma (Benjamin Yuen) has just been promoted to Inspector in the AI division.

It also makes his life non-social which results to him talking to a toy basketball he named Jason as if it was a real person.

Bui Baby happens to be a regular passenger on the same bus driver vehicle during one of these extreme shifts and witnessed the occurrence of an accident.

Her eagerness to clear the bus driver causes her to offend the AI team and Sze Ma Sir in front of high-ranking officials.

The AI team has a hit and run case that should be easily solved since a few surveillance cameras captured only the victim and suspect at the accident scene but not how it happened.

However, due to the recent rain storm any other evidence has been washed away from the accident scene and also the suspect has a high powered attorney who is also his brother protecting him.

To determine how the accident happened Sze Ma must reconstruct it with the expensive sports car the suspect was driving.

Besides revenge Hung Yan also bugs Bui Baby in order to stay one step ahead of the authorize to facilitate his brother's escape.