Speaking of idiot lights, they rock. How often do you really watch the gauges to monitor the engine? If you do get caught up in driving and not check them for a bit, they'll let you know something need attention NOW! You typically have dial gauges too, so one vote for idiot lights.
yeah, nice thing about idiot lights is ignorant bliss. Water temp light triggers about 245*, oil pressure about 7 psi. Carefree motoring as they used to say.