After the arrest, police found nitrous oxide cannisters in the car, alongside a device for consuming them.
Nitrous oxide, which has legitimate uses in medicine and food preparation, is often used to change the state of mind and provide a short and fast dissociative high but can cause fainting and heart attacks when misused.
It is also used in motor racing, as it allows the engine to burn more fuel by providing more oxygen during combustion.
The added oxygen allows for an increase in the injection of fuel, resulting in a sometimes dramatic boost in power.