The McLaren MP4-12C
Miley and Liam may not have exactly been burning rubber like this, but this is the make and model of their car. (The Daily Mail has a picture of the duo behind the wheel.)
It’s a good thing Liam and Miley splurged on this “super sports car” with all of its horsepower and speed: freeway traffic during LA’s rush hour easily tops four miles-per-hour.
Source: The Daily Mail