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

One Lap of the Web: 'Mad Men,' the Euro cars and the 2013 Trans Am

We spend a lot of time on the Internet -- pretty much whenever we're not driving, writing about or working on cars. Since there's more out there than we'd ever be able to cover, here's our daily digest of car stuff on the Web you may not otherwise have heard about. -- "Mad Men" aficionados are deep into a plot line that has the the fictional New York advertising agency beginning work with Chevrolet to create a campaign for the ill-fated Vega.

Ford improves top design on its 2015 Mustang convertible

Ford revealed details on its forthcoming 2015 Mustang convertible, whose top features several highly welcome improvements over the outgoing model’s, making it quieter, more compact and easier to operate. Though Ford continues to call the cloth top a two-layer design, it now sports a 10-mm thick cushion between the twill covering and the headliner layer, serving as both insulation and sound deadening. Ford says with the top up, the cabin is almost as quiet as the coupe’s on the road.

BMW M3 Convertible (2008): first official pictures

By Stephen Dobie First Official Pictures 18 January 2008 15:08 The M3 family has swelled further with BMW’s announcement of the new convertible version - and a twin-clutch gearbox. This is the first M3 with a folding metal hardtop, and the first with BMW's new transmission. It's a new seven-speed gearbox called M DCT gearbox – a double-clutch affair (like VW's seven-speed DSG) allowing near-instant changes, with little drop in power.