Any activity that distracts a driver should be illegal, be it texting or an animal on their lap.

WSJ: Bill to Ban Lap Dogs Unleashes Fight

Investment activity was the principal driver of fluctuations in the silver price in 2011, said the World Silver Survey.

FORBES: Silver Survey: Investment Key To Silver-Price Action In 2011; Mine Supply Hits Record High

Politics was a major driver of activity on Twitter in 2012, a sign not only that Twitter users do not shy away from talking politics on the platform, but that they relish the opportunity to do so.

FORBES: Politics Dominate Twitter's Year In Review

Housing is the result of otherwise productive economic activity, not the driver of it, so when real estate markets reached frothy heights from 2004-06, some, including this writer, warned that the rush to the real (authored by a weak dollar) was an ominous signal.

FORBES: Book Review: Enrico Moretti's "The New Geography of Jobs"

For many countries in Europe the DRIVER initiative was the critical stimulating activity for Open Access developments.

UNESCO: Global Open Access Portal

The driver of Thursday's market activity was the Bank of Japan's announcement of a series of aggressive easing measures, including a major expansion of government-bond purchases.

WSJ: Stocks Rebound

The CFTC began investigating Driver and his companies in early 2009, requesting documents relating to his trading activity.

FORBES: Las Vegas Man Hit With $41.4 Million Civil Judgment For $14 Million Ponzi Scheme, Still No Criminal Charges

According to investigators, there was no activity on Melisa Sloan's credit cards, bank accounts, Social Security number or driver's license.

CNN: Nurse vanished 10 days before domestic violence hearing