The iOS app works over Bluetooth 4.0 so it won't drain the phone's battery, but the standard is only available in the iPhone 4S and the 5.

ENGADGET: Automatic Link connects phone and car for better driving, we go hands-on (video)

In a "grantor trust, " for example, the tax is paid by the person who sets up the trust, so it doesn't drain assets from the trust itself, says Alan Kufeld, a certified public accountant at Rothstein Kass's family-office group.

WSJ: Paying Them Back

If they're wrong, the cost is low enough that it won't be a drain on their payroll.

WSJ: Mets: The Thinking Behind Jon Niese's Deal