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BMW M4 Convertible revealed. Price from £60,730

The BMW M4 Convertible (pictured) revealed We reported last month that the new BMW M4 Convertible would debut at this year’s New York Auto Show, and here it is ahead of that debut complete with trick folding metal roof, 425bhp and a price tag that just nicks over the £60k line. A direct replacement for the old M3 Convertible, the M4 Convertible will cost you just over £4k more than the M4 Coupe, but for the extra money you get the same car but with infinite headroom – and a big weight penalty. The new 3-piece metal folding roof can be tucked away in a mere 20 seconds at the flick of a switch, with better noise insulation than the M3 Convertible had and more room in the boot when the roof is down too.

Why this year's UAW-Detroit 3 talks don't matter

Here's what you need to know about the current UAW contract talks with the Detroit 3: They don't really matter. Oh, sure, agreements must be reached and contracts signed. But some commentators would have you believe the Detroit 3's future competitiveness hinges on their ability to stand up to the UAW in this year's negotiations.

Bonhams' Greenwich auction will show Italian rarities

The biggest star of Bonhams' seventh annual Greenwich auction will be the 1975 Lamborghini Countach LP400 Periscopica shown above, a pristine early example of the legendary wedge with a single owner and less than 10,500 miles -- its roof carried a groove cut into the sheetmetal that allowed light to hit the rearview mirror, providing a still-laughable semblance of rearward visibility. Of course, the door is always preferable. Just 158 LP400 Countachs were ever produced, before the firm moved on in 1978 to the outrageously styled LP400S.