item that was delivered with the road-going version of the 155, however unfitted in its boot. Audi joined the BTCC in 1996 with its four-wheel drive A4 Quattro, and went on to take that year's title. The continuously high number of manufacturer-backed teams meant rapid development on the cars and quickly growing costs to compete which caused several manufacturers to withdraw from the championship until the 2000 season, when only Ford, Honda and Vauxhall remained in the championship. To this day, the 'super touring era' during the 1990s is still looked at as the most successful period of the BTCC. The high number of manufacturer-backed teams provided very close competition, close and hard-fought racing on track and many spectators at the circuits. BTC Touring and Super 2000 cars In order to reduce the costs to compete in the championship, the organisers introduced new regulations for the 2001 season. The BTC Touring regulations cut costs dramatically but both manufacturer and spectator interest was low. The Super 2000 rules were adopted for the 2007 season. The 2000s saw cheaper cars than the later Supertouring era, with fewer factory teams and fewer international drivers. Next Generation Touring Car In 2009, the BTCC released details of its Next Generation Touring Car (NGTC) specification, to be introduced from 2011. The introduction of these new technical regulations were designed to dramatically reduce the design, build and running costs of the cars and engines as well as reducing the potential for significant performance disparities between cars. The NGTC specification also aimed to cut costs by reducing reliance on WTCC/S2000 equipment, due to increasing costs/complexity and concerns as to its future sustainability and direction. Current NGTC cars Currently, the cars used are a mix of 2.0 L saloons (sedans) such as the BMW 3-Series and Infiniti Q50, and hatchback cars such as the Honda Civic, Toyota Corolla and Ford Focus, based on models from a variety of manufacturers, using NGTC regulations. S2000 cars continued running in the Jack Sears Trophy until the 2014 season. Teams BTCC teams are a mixture of manufacturer entries (currently BMW and Toyota) and independent teams such as BTC Racing, and Motorbase Performance. In 2010, following Vauxhall's decision to pull out of the series, there were two new works teams, : Chevrolet, run by RML; and Honda, run by Team Dynamics. In 2005, Team Dynamics became the first independent outfit to win the BTCC