Yeap you can drive this car just in GT6 before the official launch in 2014.

now the endless updates and add ons, I want my vision GT cars.

im hoping the Toyota one is a new supra concept rumoured for detroit auto show ehehhehehehehehe

Yeap... like the Corvette with GT5.

Another thing now available, turn 1 million into 20 million credits in 4 easy steps
http://www.eurogamer.net/articles/2013-12-11-gt6-glitch-gives-you-20-million-credits-in-three-minutes

BTW it is free DLC.

This car features the new Seasonal Event.

BMW M4 Coupé Super Lap: Nürburgring GP /F / 1 Lap
Period of Availability: 12/11/2013 18:00 – 12/25/2013 22:00
Gold: Cr.50,000 Silver: Cr.35,000 Bronze: Cr.15,000

“It is always wonderful to be able to bring to life a brand new car and I would like to thank BMW for trusting us with all of the data we needed to create the BMW M4 Coupé at such an early stage. The car is fantastic. I felt very privileged to have a few laps around Ascari during the Gran Turismo 6 launch event and I am sure that Gran Turismo fans will now enjoy the same experience as well as the novelty of being among the first in the world to try the BMW M4 Coupé.”