The arrangement ended in 1972 when the government issued a requirement that to enjoy favourable tariff treatment locally produced cars should feature 85% local content.

Perhaps create a reduced tariff for companies who don't supply their own roofs, or retain a more favourable tariff for individuals who are genuinely adding to their own properties at their own expense.

Processed products which qualify for end-use relief may be released to free circulation at a reduced rate of duty on account of their end-use regardless of whether the import goods were eligible for favourable tariff treatment or not using CPC 40 91 02.