Complex sentence: The name of the group is derived from the expression "asleep at the wheel" which means that one has fallen asleep while operating a vehicle; it can also describe someone who is blissfully unaware of a dangerous situation.
Split into simpler sentences: The name of the group is derived from the expression "asleep at the wheel" which means that one has fallen asleep while operating a vehicle. It can also describe someone who is blissfully unaware of a dangerous situation.