On the economic front, Mahathir inherited the New Economic Policy from his predecessors, which was designed to improve the economic position of the bumiputera (Malaysia's Malays and indigenous peoples) through targets and affirmative action in areas such as corporate ownership and university admission. Mahathir also actively pursued privatisation of government enterprises from the early 1980s, both for the liberal economic reasons it was being pursued by contemporaries such as Margaret Thatcher, and because he felt that combined with affirmative action for the Bumiputera it could provide economic opportunities for Bumiputera businesses. His government privatised airlines, utilities and telecommunication firms, accelerating to a rate of about 50 privatisations a year by the mid-1990s. While privatisation generally improved the working conditions of Malaysians in privatised industries and raised significant revenue for the government, many privatisations occurred in the absence of open tendering processes and benefited Malays who supported UMNO. One of the most notable infrastructure projects at the time was the construction of the North–South Expressway, a motorway running from the Thai border to Singapore; the contract to construct the expressway was awarded to a business venture of UMNO. Mahathir also oversaw the establishment of the car manufacturer Proton as a joint venture between the Malaysian government and Mitsubishi. By the end of the 1980s, Proton had overcome poor demand and losses to become, with the support of protective tariffs, the largest carmaker in Southeast Asia and a profitable enterprise.