A man in Hawaii has been sentenced to 18 months in jail for trading meth for the use of rental cars, according to a report by Hawaii Tribune-Herald.

Alan Scott Aki pleaded guilty to two counts of unlawful control of a propelled vehicle and second-degree promotion of a dangerous drug, says the report.

He was arrested as part of a traffic stop; he was driving a 2015 Nissan Altima, which was reported stolen, according to the report. Police recovered 12 packets containing a total of 9 grams of methamphetamine.

Aki told Kona Circuit Court Judge Ronald Ibarra that he traded a gram of meth to an employee at a car rental business for use of the first vehicle, a 2013 Nissan Maxima. It was intended that Aki would return the vehicle later without the company realizing that it was rented out, according to the report.

Aki said that deal didn’t work out and the employee told him that he couldn’t return the car to the system, so Aki should keep the vehicle, according to the report. Later, Aki traded another gram of meth for the use of the Nissan Altima, the vehicle in which he was arrested.

Click here for the full Hawaii Tribune-Herald report.