Francisco Hartley has built this excellent Lamborghini Aventador. I was not able to find a video about it but the images speak for themselves. In my opinion it is one of the best LEGO Lamborghini builds yet. There are many functions too: 12 cylinders, gearbox, and suspension and others. I am sure we are going to hear more from Francisco in the future. (via The Lego Car blog)
Nico71 has build a classic rallye car. This one does not follow the classic super car recipe very strictly: it is slightly smaller and does not contain any cylinders or gearbox. It does contain a suspension and a full drivetrain though, driven by PF motors. Everything can be controlled from the remote, making it one of the smallest remote-controllable Technic cars. (via SETechnic)
Last but not least a very unique creation from Egor Karshiev: The BOSS. As it can be seen on the video this is a trial track with serious climbing capabilities. Like the rallye car above it can be fully remote controlled too.