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The thinking man’s M3: Alpina D3 Bi-Turbo is world’s fastest diesel production car

German tuning firm Alpina has been tweaking BMWs since it started back in 1965 – in fact, it helped BMW develop the legendary 3.0 CSL, so it seems it knows its onions. However, its latest effort is something a little different. Not quite a conventional performance car, the 2013 Alpina D3 Bi-Turbo is actually the world’s fastest diesel production car, according to the firm.

Renault Sport RS 01

The Renault Sport RS 01 is the company's first series-production result of its intention to re-enter the sports car segment, as signalled by the DeZir and Alpine A 110-50 concepts. The car, however, is a track-only creation for the World Series by Renault racing championships. While we usually wouldn't cover racing cars, Renault's design department has clearly been heavily involved in the RS 01's development.

One Lap of the Web: Who's collecting cars and who's jumping big rigs?

-- Hagerty content VP and friend of Autoweek Rob Sass wonders out loud: When the baby boomers put down their auction flags and retire, what will happen to the collector car industry? "Who's going to buy all their cars?" (We will. –Ed.) Who, indeed -- every generation defines, and is simultaneously defined by, its own tastes.