It feels like in the last few years, the rate of innovation is building Lego has accelerated massively. We have seen functional dual-clutch transmissions and PorschesPorscheGermany, 1931 > present43 models
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in the past, but a Spanish Lego builder who goes by the named Fernando has taken things a step further with a fully functional Caterham SevenCaterham 7United Kingdom, 1973 > present67 versions
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. 

Fully functional means that the car has everything shy of working headlights. The car is powered by an electric motor and battery located in the rear, but it has simulated movement of the pistons. The suspension is a functional dual-wishbone system in the front and functional De Dion rear suspension. It has working disc brakes and a working sequential five-speed plus reverse transmission that includes a gear display in the cockpit. The steering also works. All of these functions are controlled from a homemade radio controller.

He says that the car is built to 1:7 scale with dimensions of 45cm long, 23cm wide and 16cm tall. It has roughly 2,500 parts and weighs 2.2kg. 

This is not Fernando's first project. According to his website, he will be displaying four cars that he has built at the Lego Fan Weekend in Denmark. They will include a Land Rover Defender 110Land Rover Defender Gen.1United Kingdom, 1983 > present122 versions
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, Mini Cooper Mark IAustin Mini CooperUnited Kingdom, 1961 > present7 photos
, the Caterham and a Truck Trial 4X4. 

He also shares on his website his designs for Lego designs for a working four-link rear suspension, torsion beam rear suspension, and live axle with leaf springs.

According to his website, Fernando is a 26-year-old civil engineering student in Madrid. He is a founding member of ALE, the Lego Spanish Association.