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

Now your wheels can light up Christmas, too!

GloRyder By now, you've probably finished decking your halls with boughs of holly and pinning Christmas lights to the outside of your house, but have you considered illuminating your car's wheels, too? Well if an American company has its way, you could soon be doing just that. And better still, you could be able to control the lights from your smartphone.

Tesla Model S performance version to rival BMW M5

Tesla Model S with M5 Performance Our inherent scepticism about Elon Musk’s claims for the Tesla Model S refuses to go away, but Tesla are convinced they can deliver the Model S with a 300-mile range, great looks, great performance and top-end tecchy goodness at a sub-$70k price tag. And now, it seems, there is going to be a Tesla Model S with performance to rival the BMW M5. At an event yesterday in California, Elon Musk revealed that at launch – the Model S is expected to be hit the road in 2012 with UK cars arriving in 2013 – the Model S will in fact have four variants on offer.

Concept Car of the Week: Renault Vel Satis (1998)

The approach to the design of top end models varies greatly depending on the manufacturer's heritage and the cultural differences of each country. It might be a conventional combination of wood and leather for some, power and technology for others, but it is generally packaged into a three-box four-door sedan or two-door fastback. Renault on the other hand had a much more cutting edge vision of what a luxury automobile could be.