meditate
–verb (used without object)
1.
to engage in thought or contemplation; reflect.
2.
to engage in transcendental meditation, devout religious contemplation, or quiescent spiritual introspection.

drivitate
to engage in above while in the car.

toobitate
to engage in same while gazing at the TV.

napitate
to engage in same while lying somewhere comfortable such that the effort results in sleep.