In the principal Regulations after regulation C16 ther shall be inserted the following new regulation—
Contributions based on remuneration including provision of motor vehicles
(C17)
(1) This regulation applies to aperson whose contribution under regulation C2 or C3 in respect of a pewriod including 31st December 1992 is based on a remuneration which, for the purposes of these Regulations in force at that date, includes an amount representing the money value to him of the provision of a motor vehicle.
(2) Notwithstanding the definition of “remuneration” in Schedule 1 to these Regulations, the money value, to a person to whom this regulation applies, of the provision of a motor vehicle shall be treated as included in his remuneration for the purposes of these Regulations until the earlier of the date on which—
(a) a motor vehicle is no longer provided for him; or
(b) he ceases to be employed by the employing authority employing him on 31st December 1992.