Code of Federal Regulations Title 10. Energy § 10.490.305 Acquisitions satisfying the mandate

(a) The purchase or lease of an Original Equipment Manufacturer light duty vehicle (regardless of the model year of manufacture) that is an alternative fueled vehicle and that was not previously under the control of the covered person;

(b) The purchase or lease of an after-market converted light duty vehicle (regardless of the model year of manufacture), that was not previously under the control of the covered person;  and

(c) The conversion of a newly purchased or leased light duty vehicle to operate on alternative fuels within four months after the vehicle is acquired by a covered person;  and

(d) The application of alternative fueled vehicle credits allocated under subpart F of this part.