In an attempt to cut costs, since 2006 new regulations required mechanical front and rear differentials, while the central differential remained active. Active suspension and water injections were also prohibited. Cars entered by a manufacturer had to be equipped with the same engine for two rallies; further limitations were imposed on the changing of some parts, including suspension, steering, turbochargers and gearboxes.
"bring together," c.1600, from French rallier, from Old French ralier "reassemble, unite again," from re- "again" (see re-) + alier "unite" (see ally (v.)). Intransitive meaning "pull together hastily, recover order, revive, rouse" is from 1660s. Related: Rallied; rallying. Rally round the flag (1862) is a line from popular American Civil War song "Battle Cry of Freedom."
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).
After the crash, an investigative team from the UK Department for Transport Air Accidents Investigation Branch attended the scene in co-operation with Strathclyde Police. The wreckage of the helicopter was removed to Farnborough for further forensic investigation. A report into the accident was published on 12 February 2009. In it, the AAIB did not reach a definite conclusion as to the cause of the accident, stating instead that "the helicopter crashed in a wooded valley while manoeuvering at high speed and low height. It was intact prior to impact, and the available evidence indicated that the engine was delivering power. The cause of the accident was not positively determined. Although no technical reason was found to explain the accident, a technical fault could not be ruled out entirely. However, it is more likely that the pilot attempted a turning manoeuvre at low height, during which the helicopter deviated from its intended flight path; whether due to the pilot encountering handling difficulties, misjudgement, spatial disorientation, distraction or a combination of such events. There were indications that the pilot had started a recovery but, with insufficient height in which to complete it, the helicopter struck trees in the valley and crashed, killing all four occupants."
The Liège continued as uncompromisingly an open road event run to an impossible time schedule, and remained Europe's toughest rally until 1964, by which time it had turned to the wilds of Yugoslavia and Bulgaria to find traffic-free roads; but in the end the pressures were irresistible. The Coupe des Alpes struggled on until 1973 until it too succumbed, its demise no doubt hastened by the decision of the French motor sporting authorities to select the Tour de Corse as its representative event in international rally championships.
In the past, most rally courses were not allowed to be scanned prior to the race, and the co-drivers used only maps supplied by the organization. The exact route of the rally often remained secret until race day. Modern rallies have mostly converted to using organizer-supplied notes or allowing full reconnaissance, as opposed to racing the stages blindly. This change has been brought on in large part due to competitor demand.
McRae rejoined Prodrive for the 2004 24 Hours of Le Mans where he took third place in the GTS class, and ninth position overall in a Ferrari 550-GTS Maranello partnering Darren Turner and Rickard Rydell. Fellow countryman, and Le Mans winner Allan McNish commented that "Colin has adapted far better than people expected" to endurance sportscar racing.
The funeral for Colin and Johnny took place on 26 September at Daldowie Crematorium near Glasgow, conducted by the Rev Tom Houston, who had married the McRaes, and the Rev Steven Reid, chaplain at Johnny's school. An address was given by Robbie Head, a former rally driver and commentator who was a close friend of McRae's, with the Rev Houston giving the benediction. McRae's niece and nephews performed the tune Highland Cathedral, a popular funeral song. The song "(Sittin' on) the Dock of the Bay" by Otis Redding, a favourite song of McRae's, was played when the family entered the chapel (coincidentally, Redding himself also died in an air crash). The Proclaimers' song "I'm on My Way" was played when they left. Colin and Johnny McRae were cremated in the same coffin. Among the attendees at the funeral were fellow Scottish racing drivers Jackie Stewart and Dario Franchitti.