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

Forza Motorsport 3: Microsoft's latest offers 100 tracks, 400 cars, 300,000 polygons

Even if you were an international billionaire playboy car collector (and, this being AutoWeek, some of you are), you probably would not own more than 100 or 200 cars. If you could own a racetrack, you probably could not afford more than one. You could not jet around the world on a whim--especially with all those cars--to drive whatever track you were in the mood for at the moment.

Wide-ranging, weird and wonderful John Scotti Collection to cross block in Auburn

The John Scotti Collection is, we'd like to think, exactly the sort of assemblage of cars we would put together were we a mechanic who earned his fortune building a group of successful Montreal-based car dealerships. To be sure, the collection of roughly 450 cars represents Scotti's tastes, which seem to tend toward the muscular. But the man, who sells everything from Mitsubishis to Lamborghinis, did an admirable job branching out from the standbys that seem to fill the ranks of every large collection, finding room for both the commonplace and the strange.

Lexus LF-NX concept (2013) at Frankfurt motor show

This is the Lexus LF-NX concept SUV. It’s a BMW X3-sized crossover that’ll sport hybrid power and entice would-be Lexus buyers who don’t need a car as big as the RX hybrid SUV. That is, if the crazy styling doesn’t put them off, because this is certainly one of the more polarising concept designs we’ve seen in recent times.