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

Traffic Booster honks at drivers as soon as the light turns green

The Traffic Booster is a simple little device: a few resistors, some switches, a box with a cheap car horn in it. The schematics are here for easy home replication, dog-eared copy of "The Anarchist Cookbook" not required. But the apocalyptic infuriation it causes is priceless, and if deployed across a city center, the ensuing riots will cause untold millions in damages.

Concept Car of the Week: Matra Laser (1971)

Founded in 1937, French company Matra began its activities by manufacturing military equipment such as aeronautics and weaponry. In the mid ‘60s, under Jean-Luc Lagardere's ambitious direction, the company bought Automobiles Rene Bonnet to expand its portfolio with street and racing cars. The first model solely developed by Matra was the bonkers, but brilliant, 1967 M530, which took its name from the company's surface-to-air missile the R530.

Salon Privé 2011: Wet & Wonderful

Salon Prive 2011 - wet, but wonderful We’ve said it before, and we’ll say it again: Salon Privé is one of our favourite ways to meet cars. Up there with Villa d’Este and Pebble Beach, it’s as civilised a way as you can imagine to soak up the greatest cars in the world. The greatest cars there are laid out in the sumptuous grounds of Syon Park (new venue; worked well), with food and drink in abundance.