Question 1063275
You will have 1 driver with 4 people left over
With each of the 3 possible drivers, the 4 left over
can arrange themselves {{{ 4*3*2*1 = 24 }}} 
different ways. Since there can be 3 drivers,
that gives {{{ 3*24 = 72 }}} different seatings
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Note that if anyone could drive, they could be
seated {{{ 5*4*3*2*1 = 120 }}} different ways
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Definitely get a 2nd opinion on this.