 Complete the following phrase:  The 2014 season for Audi would be a year that they would face much pressure from not only a more developed and experienced manufacturer in Toyota, but opposition from the sister company of Porsche return to the top prototype class, which they have been absent from since 1998. The development and engineering of the 2014 e-tron quattro was a massive overhaul from past seasons, which in contrast to the previous two seasons, struggled for pace. The reigning champions effort was challenged greatly by the likes of Toyota, who came with a new and more powerful car in their TS040 Hybrid. Their formula proved to be faster and more consistent than Audi. Porsches 919 Hybrid prototype showed great potential to win races off of its sheer pace, however, the car struggled with reliability, hindering the car from producing favorable results. Coming off of a not-so-promising start to the season, Audi was able to take two wins at the 