BMW have announced they will be releasing thier most powerful diesel engine setup next year. Most cars are happy with 1 turbo, some use 2, a few have 3 turbos, but BMW decided 4 should be fun! No official statistics yet, but it's expected to get over 400 hp with monstrous amount of torque, probably enough to tow a small planet. Wonder if having quad turbos brings any economy benefits?
More info here:
BMW 750d xDrive with quad-turbo diesel to debut in 2016