Auto Meter 4594 Ultra-nite Air-core In-dash Tach, 10k Rpm, 5 Inch on 2040-parts.com

Callaway supercharges 2015 Chevrolet Tahoe and Suburban

The debut of a number of new vehicles from Chevrolet has not gone unnoticed by companies specializing in building go-faster versions of cars and trucks from the Bowtie brand, and the most the most recent vehicles to receive a boost in performance will be the 2015 Chevrolet Tahoe and the Chevrolet Suburban. Callaway Performance may be associated mostly with building supercharged versions of the Corvette, but they're also lent their tuning expertise to Chevrolet trucks, and they've already got some things in store for the brand's largest SUVs. Callaway has announced that they'll give the 5.3-liter EcoTec3 V8 found in both SUVs a supercharged boost, courtesy of an Eaton TVS Roots-style supercharger.

Concept Car of the Week: Lamborghini Marzal (1967)

In 1967, Lamborghini's lineup consisted of just two cars – the Miura and the 400 GT 2+2 – but this wasn't enough for Ferrucio Lamborghini, who fancied a true four-seater GT to add to his stable. After the successful collaboration on the Miura, he naturally returned to carrozeria Bertone which was commissioned to design the car. The project was left in the hands of Marcello Gandini, who turned Ferrucio's vision into a revolutionary design concept.

Solar car built by Cambridge University crashes

The annual World Solar Challenge is taking place right now. 38 teams from all round the globe are racing 3,000km (1,864 miles) across Australia using energy from the sun alone. Unfortunately, the planned entry from the UK’s very own Cambridge University isn’t amongst them – because five days before the start the above happened.