Two days after the 2012 Hungarian Grand Prix, the teams unanimously agreed to ban the use of double-DRS systems for the 2013 season. Nevertheless, Lotus continued their development of a double-DRS system, which they referred to as "The Device", and anticipated its introduction at the Belgian Grand Prix, one month later. However, heavy rain in the first two practice sessions at the Spa-Francorchamps circuit delayed The Device's introduction. The team's plans were further put on hold after Romain Grosjean was banned from taking part in the Italian Grand Prix for his role in a multi-car pile-up at the start of the Belgian Grand Prix. Grosjean was replaced by the team's testing and reserve driver, Jérôme d'Ambrosio, but d'Ambrosio's inexperience with the 2012-specification of cars and the low-downforce nature of the Monza circuit — which meant that any gain a double-DRS system had to offer would be negated — prompted the team to delay The Device's introduction even further, naming the Japanese Grand Prix in early October as their planned point of introduction. The team used the double-DRS system as planned during Friday practice, but shelved it until the third round of Young Driver Tests in November after being unhappy with their progress. Kimi Räikkönen admitted that using the system made finding the proper setup for the car much more difficult than without it. By comparison, Red Bull Racing introduced their own variant on the system at the Singapore and Japanese Grands Prix, which was credited with aiding Sebastian Vettel in securing two race wins.