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We've been driving the BMW 328i Luxury since February, and spent most of that time focusing on the car's performance, stopping occasionally to muse about its excellent engine and less-than-optimal tires, suspension, and steering. This month, we turn to the 3-series' myriad technological features.

Over the past two weeks, we’ve given you a comprehensive rundown of the changes you can expect in the 2013 Lexus LS lineup, and we’ve also taken a trip down memory lane with our timeline of Lexus LS development, going all the way back to 1983, when the idea of a world-class, full-size luxury sedan from a Japanese automaker seemed like a pipe dream to all but a few visionaries inside Toyota. All that remained was for us to get behind the wheel of the freshened Lexus flagship, which we’ve just done in Palo Alto, California, in the heart of Silicon Valley and in the shadows of Stanford University. It’s luxury-car central here, and the fleet of LS sedans that Lexus has waiting curbside at the Four Seasons has to compete for attention with Porsche Panameras and Lamborghinis in the hotel’s circular entrance drive.