Arias Pistons 12.5:1 Compression 82mm Bore Honda B-series on 2040-parts.com

Yamaha Motiv concept stars at the Tokyo Motor Show 2013

This is a real surprise here at the Tokyo Motor Show 2013 – it turns out that Yamaha is one of the companies that has done a deal with Gordon Murray Design to further investigate building a car using the firm’s revolutionary iStream efficient production process. Yes, Yamaha. The motorbike company.

Concept Car of the Week: Dodge Deora (1967)

Half concept car, half custom but all awesome, the Dodge Deora was designed by former GM designer Harry Bentley Bradley for the famous car customizers the Alexander brothers who wanted to build a radical custom truck using one of the Big Three's new cabover mini-pickups. They relied on Bradley's futuristic drawings to seduce Chrysler who eventually agreed to provide a stripped down A100 truck for them to customize although the final design shares almost nothing with the original donor car. The cabin was radically chopped and integrated into the rest of the body and – after its suspension was also lowered – the overall height of the Deora was reduced by a whopping 380mm.

Concept Car of the Week: Saab Aero X

In January 2005 Bryan Nesbitt, then-executive director of GM Europe Design, charged the 15-strong Saab Advanced design team in Gothenburg, Sweden, to create the "ultimate vision of the brand". The design team – led by head of Advanced Design at Saab, Anthony Lo – worked on a number of sports car proposals, which were considered 'the jet fighters of the road.' The chosen proposal by Alex Daniel was for a large, front-engined sports car that would become one of the most universally acclaimed concept cars of recent times. Of course the Aero X's door arrangement – complete with huge, forward-hinged canopy – is its party trick, but even without the theatrics the car's proportions, surfacing and graphics are exceptional.