For Test 1 the Alfa Romeo was used as the bullet vehicle and the
Ford as the target. For Tests 2 and 3 the configuration was reversed
with the Ford becoming the bullet and the Alfa Romeo the target
vehicle. The reason for exchanging vehicle roles is that as part
of other research the Ford Focus had been subjected to a 10 mph
collision in between Tests 1 and 2. To avoid issues with alterations
in elasticity it was decided that the roles of the vehicles be
reversed.