The causes of rallies vary. Short-term rallies can result from news stories or events that create a short-term imbalance in supply and demand. Sizeable buying activity in a particular stock or sector by a large fund, or an introduction of a new product by a popular brand, can have a similar effect that results in a short-term rally. For example, almost every time Apple Inc. has launched a new iPhone, its stock has enjoyed a rally over the following months.
To limit power, all forced induction cars were fitted with a 34 mm diameter air restrictor before the turbocharger inlet, limiting the air flow to about 10 cubic meters per minute. The restriction was intended to limit power output to 300 hp although some WRC engines were believed to produce around 330–340 hp. Engine development did not focus on peak power output but towards producing a very wide powerband (or power curve). Typically, power output in excess of 300 hp was available from 3000 rpm to the 7500 rpm maximum, with a peak of 330–340 hp at around 5500 rpm. At 2000 rpm (the engine idle speed in "stage" mode) power output was slightly above 200 hp.
The 2005 incarnation of the McRae franchise was released for PlayStation 2, Xbox, Microsoft Windows and PlayStation Portable and has over 70 stages spread over nine countries. There are over 30 cars available. There is also a revised graphics and damage engine that enables paint scratches on the car, and a new 'career' mode where the player starts out in the lower club leagues and works their way up to compete with Colin McRae in his 2004 Dakar Rally Nissan Pick-Up. In 'Championship' mode the player takes the role of Colin himself competing in six rallies using any 4WD car.
Two ultra long distance challenges took place at this time. The Peking-Paris of 1907 was not officially a competition, but a "raid", the French term for an expedition or collective endeavour whose promoters, the newspaper "Le Matin", rather optimistically expected participants to help each other; it was 'won' by Prince Scipione Borghese, Luigi Barzini, and Ettore Guizzardi in an Itala. The New York–Paris of the following year, which went via Japan and Siberia, was won by George Schuster and others in a Thomas Flyer. Each event attracted only a handful of adventurous souls, but in both cases the successful drivers exhibited characteristics modern rally drivers would recognise: meticulous preparation, mechanical skill, resourcefulness, perseverance and a certain single-minded ruthlessness. The New York–Seattle race of 1909, if shorter, was no easier. Rather gentler (and more akin to modern rallying) was the Glidden Tour, run by the American Automobile Association between 1902 and 1913, which had timed legs between control points and a marking system to determine the winners.
Starting in 2011, rules for WRC cars changed to be more restrictive. Now regulations were derived from Super 2000 cars with a different aerodynamic kit. The cars were smaller models (there was no longer a minimum 4m length), with a 1600 cm3 direct injection turbo-charged engine with a 33 mm diameter air restrictor and a maximum pressure of 2.5 bar absolute (this will limit torque to about 400 N.m or less).
This particular era was not to last. On the 1986 Rallye de Portugal, four spectators were killed; then in May, on the Tour de Corse, Henri Toivonen went over the edge of a mountain road and was incinerated in the fireball that followed. FISA immediately changed the rules again: rallying after 1987 would be in Group A cars, closer to the production model. One notably successful car during this period was the Lancia Delta Integrale, dominating world rallying during 1987, 1988, 1989, 1990, 1991 and 1992 – winning six consecutive world rally championships, a feat yet unbeaten.