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

How Google's autonomous car navigates city streets

Google's self-driving car has been on the road for five years now, at various levels of autonomy. From the ease and relative serenity of California's arrow-straight highways, the car drove hundreds of thousands of miles with a greater level of concentration and mastery than the wandering attention spans of humans could accomplish. In 2012, Google shifted from the freeways to the cities, navigating a far more convoluted set of challenges: the slow-speed chaos that comes with any city, any suburb, any place with people and cars in it.

BMW set to debut diesel 7-series in the US

While Mercedes-Benz has let us Americans buy diesel versions of its flagship sedan from time to time, BMW has kept a number of versions of the 7-series from our shores, among which are 7-series sedans with diesel engines. Well, it looks like we'll finally be getting a diesel 7-series after all, with the arrival of the 740Ld later this spring. The 740Ld will be powered by a 3.0-liter inline-six diesel engine with a single turbocharger with variable vane turbine technology, making 255-hp and 413 lb-ft of torque, and will be coupled exclusively with BMW's xDrive all-wheel drive system.

One Lap of the Web: Let's visit Amelia Island in a short bus camper

-- Ken Kesey and friends spent most of the countercultural 1960s driving across the country in a 1939 International Harvester school bus painted in psychedelic colors. Portland, Maine architect Will Winkelman might do less drugs (we don't know), but the 1959 Chevrolet Viking short bus he designed might fit Kesey and his Merry Pranksters, especially if you stacked them head-to-toe. For his client, Winkelman designed a Moroccan theme of colorful patterns and textures across the curtains and twin beds, beaded light fixtures and wood paneling everywhere, approaching the project as one might approach boat-building or a particularly run-down Detroit "fixer-upper." The result has plumbing, power, an olive-drab paint scheme that blends into the New England woods, and the overall sense of a guest bedroom that you can escape in whenever you tire of your host's company.