mm wrote:
A good accessory. When I'm driving I like to set my alarm clock to
wake me up every 15 minutes.

Yeah, that was my reaction at first, too. Later I found it was actually
quite useful when taking short "safety naps" at rest stops. A 15 minute
nap does wonders when I'm feeling not so alert in the afternoon.
'Course nowadays I just use the alarm clock feature of my cell phone.