The LEGO Power Racers subtheme of LEGO Racers was introduced in 2005 and focused on TECHNIC and System vehicles with various functions such as pull-back motors, falling apart on impact, or slammers which propelled it forward. Power Racers was discontinued in 2010 and consisted of 35 sets in total.
2007 LEGO Sets
For collectors, 2007 proved to be an important milestone for with the release of the Modular Buildings theme which initially included Café Corner (10182-1) and Market Street (10190-1). Also, the Star Wars license with LucasFilms was originally planned to end that year, but is renewed. To celebrate Star Wars' 30th anniversary, LEGO released a free, 14-carat gold C-3PO minifigure. 2007 also saw the discontinuation of a number of themes including Aqua Raiders and Knights' Kingdom II but also so the introduction of the Thomas and Friends theme.