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CAR tech: how much F1 is in the McLaren P1?

We're forever told racing tech makes for better road cars, but is that true, even in the case of the £866,000 McLaren P1? CAR tech looks at the similarities between Jenson Button's weekend racer and McLaren's hybrid supercar: Gives you wings A Formula One car wins or loses by its aero package – and the P1’s a true aero car with a mighty set-up. It has the highest amount of downforce of any road car on sale – so you couldn’t get closer to F1 with number plates if you tried.

Tesla Model S battery fire inquiry closed by NHTSA

The National Highway Traffic Safety Administration said it closed a three-month-long investigation of fires in the Tesla Model S this week, as Tesla announced a design change to better shield the electric car's batteries. Tesla Motors Inc. said today it has started building the Model S with a titanium underbody shield to prevent battery fires like the two that occurred in the United States last year when Model S drivers struck road debris.

BMW i3 starts at $42,275

The electric BMW i3 mini crossover will cost $42,275, including destination, when it debuts to the press on July 29. The company is hosting three simultaneous launch events in London, New York and Beijing. The production version of the car was first seen at the Frankfurt motor show in March.